diff --git a/cannamanage-api/src/main/java/de/cannamanage/api/controller/GrowCalendarController.java b/cannamanage-api/src/main/java/de/cannamanage/api/controller/GrowCalendarController.java
new file mode 100644
index 0000000..cb5b772
--- /dev/null
+++ b/cannamanage-api/src/main/java/de/cannamanage/api/controller/GrowCalendarController.java
@@ -0,0 +1,135 @@
+package de.cannamanage.api.controller;
+
+import de.cannamanage.api.dto.grow.*;
+import de.cannamanage.domain.entity.*;
+import de.cannamanage.domain.enums.GrowStage;
+import de.cannamanage.domain.enums.SensorReadingType;
+import de.cannamanage.service.GrowCalendarService;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import jakarta.validation.Valid;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+import java.util.UUID;
+
+@RestController
+@RequestMapping("/api/v1/grow")
+@RequiredArgsConstructor
+@Tag(name = "Grow Calendar", description = "Grow lifecycle management with sensors, photos, and feeding")
+public class GrowCalendarController {
+
+    private final GrowCalendarService growCalendarService;
+
+    @GetMapping
+    @Operation(summary = "List all grow entries")
+    @PreAuthorize("hasRole('ADMIN') or @staffPermissions.has(authentication, T(de.cannamanage.domain.enums.StaffPermission).VIEW_STOCK)")
+    public ResponseEntity<List<GrowEntryResponse>> listGrowEntries() {
+        List<GrowEntryResponse> entries = growCalendarService.getGrowEntries().stream()
+                .map(this::toResponse)
+                .toList();
+        return ResponseEntity.ok(entries);
+    }
+
+    @PostMapping
+    @Operation(summary = "Create a new grow entry")
+    @PreAuthorize("hasRole('ADMIN') or @staffPermissions.has(authentication, T(de.cannamanage.domain.enums.StaffPermission).RECORD_STOCK_IN)")
+    public ResponseEntity<GrowEntryResponse> createGrowEntry(@Valid @RequestBody CreateGrowEntryRequest request) {
+        GrowEntry entry = growCalendarService.createGrowEntry(
+                request.name(), request.strainId(), request.notes(), request.expectedHarvestAt());
+        return ResponseEntity.status(HttpStatus.CREATED).body(toResponse(entry));
+    }
+
+    @GetMapping("/{id}")
+    @Operation(summary = "Get grow entry detail with stages, sensors, photos, feedings")
+    @PreAuthorize("hasRole('ADMIN') or @staffPermissions.has(authentication, T(de.cannamanage.domain.enums.StaffPermission).VIEW_STOCK)")
+    public ResponseEntity<GrowEntryDetailResponse> getGrowEntry(@PathVariable UUID id) {
+        GrowEntry entry = growCalendarService.getGrowEntry(id);
+        List<GrowStageLog> stages = growCalendarService.getStageLogs(id);
+        List<SensorReading> sensors = growCalendarService.getSensorReadings(id);
+        List<GrowPhoto> photos = growCalendarService.getPhotos(id);
+        List<FeedingLog> feedings = growCalendarService.getFeedingLogs(id);
+
+        GrowEntryDetailResponse detail = new GrowEntryDetailResponse(
+                entry.getId(), entry.getName(), entry.getStrainId(), entry.getStatus(),
+                entry.getStartedAt(), entry.getExpectedHarvestAt(), entry.getActualHarvestAt(),
+                entry.getHarvestedGrams(), entry.getLinkedBatchId(), entry.getNotes(),
+                stages.stream().map(this::toStageResponse).toList(),
+                sensors.stream().map(this::toSensorResponse).toList(),
+                photos.stream().map(this::toPhotoResponse).toList(),
+                feedings.stream().map(this::toFeedingResponse).toList()
+        );
+        return ResponseEntity.ok(detail);
+    }
+
+    @PutMapping("/{id}/stage")
+    @Operation(summary = "Advance to next stage")
+    @PreAuthorize("hasRole('ADMIN') or @staffPermissions.has(authentication, T(de.cannamanage.domain.enums.StaffPermission).RECORD_STOCK_IN)")
+    public ResponseEntity<GrowEntryResponse> advanceStage(@PathVariable UUID id, @Valid @RequestBody AdvanceStageRequest request) {
+        GrowEntry entry = growCalendarService.advanceStage(id, request.stage());
+        return ResponseEntity.ok(toResponse(entry));
+    }
+
+    @PostMapping("/{id}/sensors")
+    @Operation(summary = "Add sensor reading")
+    @PreAuthorize("hasRole('ADMIN') or @staffPermissions.has(authentication, T(de.cannamanage.domain.enums.StaffPermission).RECORD_STOCK_IN)")
+    public ResponseEntity<SensorReadingResponse> addSensorReading(@PathVariable UUID id, @Valid @RequestBody AddSensorReadingRequest request) {
+        SensorReading reading = growCalendarService.addSensorReading(id, request.readingType(), request.value(), request.unit());
+        return ResponseEntity.status(HttpStatus.CREATED).body(toSensorResponse(reading));
+    }
+
+    @PostMapping("/{id}/photos")
+    @Operation(summary = "Add photo")
+    @PreAuthorize("hasRole('ADMIN') or @staffPermissions.has(authentication, T(de.cannamanage.domain.enums.StaffPermission).RECORD_STOCK_IN)")
+    public ResponseEntity<GrowPhotoResponse> addPhoto(@PathVariable UUID id, @Valid @RequestBody AddPhotoRequest request) {
+        GrowPhoto photo = growCalendarService.addPhoto(id, request.filePath(), request.caption());
+        return ResponseEntity.status(HttpStatus.CREATED).body(toPhotoResponse(photo));
+    }
+
+    @PostMapping("/{id}/feedings")
+    @Operation(summary = "Add feeding log")
+    @PreAuthorize("hasRole('ADMIN') or @staffPermissions.has(authentication, T(de.cannamanage.domain.enums.StaffPermission).RECORD_STOCK_IN)")
+    public ResponseEntity<FeedingLogResponse> addFeedingLog(@PathVariable UUID id, @Valid @RequestBody AddFeedingLogRequest request) {
+        FeedingLog feeding = growCalendarService.addFeedingLog(id,
+                request.nutrientName(), request.amountMl(), request.waterLiters(),
+                request.phAfter(), request.ecAfter(), request.notes());
+        return ResponseEntity.status(HttpStatus.CREATED).body(toFeedingResponse(feeding));
+    }
+
+    @PutMapping("/{id}/harvest")
+    @Operation(summary = "Complete harvest and link to batch")
+    @PreAuthorize("hasRole('ADMIN') or @staffPermissions.has(authentication, T(de.cannamanage.domain.enums.StaffPermission).RECORD_STOCK_IN)")
+    public ResponseEntity<GrowEntryResponse> completeHarvest(@PathVariable UUID id, @Valid @RequestBody CompleteHarvestRequest request) {
+        GrowEntry entry = growCalendarService.completeHarvest(id, request.harvestedGrams(), request.linkedBatchId());
+        return ResponseEntity.ok(toResponse(entry));
+    }
+
+    // --- Mapping helpers ---
+
+    private GrowEntryResponse toResponse(GrowEntry e) {
+        return new GrowEntryResponse(e.getId(), e.getName(), e.getStrainId(), e.getStatus(),
+                e.getStartedAt(), e.getExpectedHarvestAt(), e.getActualHarvestAt(),
+                e.getHarvestedGrams(), e.getLinkedBatchId(), e.getNotes());
+    }
+
+    private GrowStageLogResponse toStageResponse(GrowStageLog s) {
+        return new GrowStageLogResponse(s.getId(), s.getStage(), s.getStartedAt(), s.getEndedAt(), s.getNotes());
+    }
+
+    private SensorReadingResponse toSensorResponse(SensorReading r) {
+        return new SensorReadingResponse(r.getId(), r.getReadingType(), r.getValue(), r.getUnit(), r.getRecordedAt());
+    }
+
+    private GrowPhotoResponse toPhotoResponse(GrowPhoto p) {
+        return new GrowPhotoResponse(p.getId(), p.getFilePath(), p.getCaption(), p.getTakenAt());
+    }
+
+    private FeedingLogResponse toFeedingResponse(FeedingLog f) {
+        return new FeedingLogResponse(f.getId(), f.getNutrientName(), f.getAmountMl(),
+                f.getWaterLiters(), f.getPhAfter(), f.getEcAfter(), f.getFedAt(), f.getNotes());
+    }
+}
diff --git a/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/AddFeedingLogRequest.java b/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/AddFeedingLogRequest.java
new file mode 100644
index 0000000..c500ec1
--- /dev/null
+++ b/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/AddFeedingLogRequest.java
@@ -0,0 +1,15 @@
+package de.cannamanage.api.dto.grow;
+
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.NotNull;
+
+import java.math.BigDecimal;
+
+public record AddFeedingLogRequest(
+        @NotBlank String nutrientName,
+        @NotNull BigDecimal amountMl,
+        BigDecimal waterLiters,
+        BigDecimal phAfter,
+        BigDecimal ecAfter,
+        String notes
+) {}
diff --git a/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/AddPhotoRequest.java b/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/AddPhotoRequest.java
new file mode 100644
index 0000000..ba87a1a
--- /dev/null
+++ b/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/AddPhotoRequest.java
@@ -0,0 +1,8 @@
+package de.cannamanage.api.dto.grow;
+
+import jakarta.validation.constraints.NotBlank;
+
+public record AddPhotoRequest(
+        @NotBlank String filePath,
+        String caption
+) {}
diff --git a/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/AddSensorReadingRequest.java b/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/AddSensorReadingRequest.java
new file mode 100644
index 0000000..816aac5
--- /dev/null
+++ b/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/AddSensorReadingRequest.java
@@ -0,0 +1,13 @@
+package de.cannamanage.api.dto.grow;
+
+import de.cannamanage.domain.enums.SensorReadingType;
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.NotNull;
+
+import java.math.BigDecimal;
+
+public record AddSensorReadingRequest(
+        @NotNull SensorReadingType readingType,
+        @NotNull BigDecimal value,
+        @NotBlank String unit
+) {}
diff --git a/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/AdvanceStageRequest.java b/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/AdvanceStageRequest.java
new file mode 100644
index 0000000..bb07263
--- /dev/null
+++ b/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/AdvanceStageRequest.java
@@ -0,0 +1,8 @@
+package de.cannamanage.api.dto.grow;
+
+import de.cannamanage.domain.enums.GrowStage;
+import jakarta.validation.constraints.NotNull;
+
+public record AdvanceStageRequest(
+        @NotNull GrowStage stage
+) {}
diff --git a/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/CompleteHarvestRequest.java b/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/CompleteHarvestRequest.java
new file mode 100644
index 0000000..c64e886
--- /dev/null
+++ b/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/CompleteHarvestRequest.java
@@ -0,0 +1,11 @@
+package de.cannamanage.api.dto.grow;
+
+import jakarta.validation.constraints.NotNull;
+
+import java.math.BigDecimal;
+import java.util.UUID;
+
+public record CompleteHarvestRequest(
+        @NotNull BigDecimal harvestedGrams,
+        UUID linkedBatchId
+) {}
diff --git a/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/CreateGrowEntryRequest.java b/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/CreateGrowEntryRequest.java
new file mode 100644
index 0000000..ddd8190
--- /dev/null
+++ b/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/CreateGrowEntryRequest.java
@@ -0,0 +1,13 @@
+package de.cannamanage.api.dto.grow;
+
+import jakarta.validation.constraints.NotBlank;
+
+import java.time.Instant;
+import java.util.UUID;
+
+public record CreateGrowEntryRequest(
+        @NotBlank String name,
+        UUID strainId,
+        String notes,
+        Instant expectedHarvestAt
+) {}
diff --git a/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/FeedingLogResponse.java b/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/FeedingLogResponse.java
new file mode 100644
index 0000000..0adb9e2
--- /dev/null
+++ b/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/FeedingLogResponse.java
@@ -0,0 +1,16 @@
+package de.cannamanage.api.dto.grow;
+
+import java.math.BigDecimal;
+import java.time.Instant;
+import java.util.UUID;
+
+public record FeedingLogResponse(
+        UUID id,
+        String nutrientName,
+        BigDecimal amountMl,
+        BigDecimal waterLiters,
+        BigDecimal phAfter,
+        BigDecimal ecAfter,
+        Instant fedAt,
+        String notes
+) {}
diff --git a/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/GrowEntryDetailResponse.java b/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/GrowEntryDetailResponse.java
new file mode 100644
index 0000000..371188c
--- /dev/null
+++ b/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/GrowEntryDetailResponse.java
@@ -0,0 +1,25 @@
+package de.cannamanage.api.dto.grow;
+
+import de.cannamanage.domain.enums.GrowStage;
+
+import java.math.BigDecimal;
+import java.time.Instant;
+import java.util.List;
+import java.util.UUID;
+
+public record GrowEntryDetailResponse(
+        UUID id,
+        String name,
+        UUID strainId,
+        GrowStage status,
+        Instant startedAt,
+        Instant expectedHarvestAt,
+        Instant actualHarvestAt,
+        BigDecimal harvestedGrams,
+        UUID linkedBatchId,
+        String notes,
+        List<GrowStageLogResponse> stages,
+        List<SensorReadingResponse> sensors,
+        List<GrowPhotoResponse> photos,
+        List<FeedingLogResponse> feedings
+) {}
diff --git a/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/GrowEntryResponse.java b/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/GrowEntryResponse.java
new file mode 100644
index 0000000..2a458cf
--- /dev/null
+++ b/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/GrowEntryResponse.java
@@ -0,0 +1,20 @@
+package de.cannamanage.api.dto.grow;
+
+import de.cannamanage.domain.enums.GrowStage;
+
+import java.math.BigDecimal;
+import java.time.Instant;
+import java.util.UUID;
+
+public record GrowEntryResponse(
+        UUID id,
+        String name,
+        UUID strainId,
+        GrowStage status,
+        Instant startedAt,
+        Instant expectedHarvestAt,
+        Instant actualHarvestAt,
+        BigDecimal harvestedGrams,
+        UUID linkedBatchId,
+        String notes
+) {}
diff --git a/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/GrowPhotoResponse.java b/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/GrowPhotoResponse.java
new file mode 100644
index 0000000..cfdcd31
--- /dev/null
+++ b/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/GrowPhotoResponse.java
@@ -0,0 +1,11 @@
+package de.cannamanage.api.dto.grow;
+
+import java.time.Instant;
+import java.util.UUID;
+
+public record GrowPhotoResponse(
+        UUID id,
+        String filePath,
+        String caption,
+        Instant takenAt
+) {}
diff --git a/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/GrowStageLogResponse.java b/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/GrowStageLogResponse.java
new file mode 100644
index 0000000..d3a2f25
--- /dev/null
+++ b/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/GrowStageLogResponse.java
@@ -0,0 +1,14 @@
+package de.cannamanage.api.dto.grow;
+
+import de.cannamanage.domain.enums.GrowStage;
+
+import java.time.Instant;
+import java.util.UUID;
+
+public record GrowStageLogResponse(
+        UUID id,
+        GrowStage stage,
+        Instant startedAt,
+        Instant endedAt,
+        String notes
+) {}
diff --git a/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/SensorReadingResponse.java b/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/SensorReadingResponse.java
new file mode 100644
index 0000000..538e818
--- /dev/null
+++ b/cannamanage-api/src/main/java/de/cannamanage/api/dto/grow/SensorReadingResponse.java
@@ -0,0 +1,15 @@
+package de.cannamanage.api.dto.grow;
+
+import de.cannamanage.domain.enums.SensorReadingType;
+
+import java.math.BigDecimal;
+import java.time.Instant;
+import java.util.UUID;
+
+public record SensorReadingResponse(
+        UUID id,
+        SensorReadingType readingType,
+        BigDecimal value,
+        String unit,
+        Instant recordedAt
+) {}
diff --git a/cannamanage-api/src/main/resources/db/migration/V9__grow_calendar.sql b/cannamanage-api/src/main/resources/db/migration/V9__grow_calendar.sql
new file mode 100644
index 0000000..605cb0d
--- /dev/null
+++ b/cannamanage-api/src/main/resources/db/migration/V9__grow_calendar.sql
@@ -0,0 +1,65 @@
+-- Grow entries (one per plant batch lifecycle)
+CREATE TABLE IF NOT EXISTS grow_entries (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    name VARCHAR(255) NOT NULL,
+    strain_id UUID REFERENCES strains(id),
+    status VARCHAR(30) NOT NULL DEFAULT 'SEEDLING',
+    started_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    expected_harvest_at TIMESTAMP WITH TIME ZONE,
+    actual_harvest_at TIMESTAMP WITH TIME ZONE,
+    harvested_grams NUMERIC(8,1),
+    linked_batch_id UUID REFERENCES batches(id),
+    notes TEXT,
+    tenant_id UUID NOT NULL,
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
+);
+
+-- Grow stage transitions
+CREATE TABLE IF NOT EXISTS grow_stage_logs (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    grow_entry_id UUID NOT NULL REFERENCES grow_entries(id) ON DELETE CASCADE,
+    stage VARCHAR(30) NOT NULL,
+    started_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    ended_at TIMESTAMP WITH TIME ZONE,
+    notes TEXT
+);
+
+-- Sensor readings
+CREATE TABLE IF NOT EXISTS sensor_readings (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    grow_entry_id UUID NOT NULL REFERENCES grow_entries(id) ON DELETE CASCADE,
+    reading_type VARCHAR(30) NOT NULL,
+    value NUMERIC(8,2) NOT NULL,
+    unit VARCHAR(10) NOT NULL,
+    recorded_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+-- Photos
+CREATE TABLE IF NOT EXISTS grow_photos (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    grow_entry_id UUID NOT NULL REFERENCES grow_entries(id) ON DELETE CASCADE,
+    file_path VARCHAR(500) NOT NULL,
+    caption VARCHAR(255),
+    taken_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+-- Feeding schedule entries
+CREATE TABLE IF NOT EXISTS feeding_logs (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    grow_entry_id UUID NOT NULL REFERENCES grow_entries(id) ON DELETE CASCADE,
+    nutrient_name VARCHAR(100) NOT NULL,
+    amount_ml NUMERIC(8,1) NOT NULL,
+    water_liters NUMERIC(8,1),
+    ph_after NUMERIC(4,2),
+    ec_after NUMERIC(6,2),
+    fed_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    notes TEXT
+);
+
+CREATE INDEX idx_grow_entries_tenant ON grow_entries(tenant_id);
+CREATE INDEX idx_grow_entries_status ON grow_entries(status);
+CREATE INDEX idx_sensor_readings_entry ON sensor_readings(grow_entry_id, recorded_at DESC);
+CREATE INDEX idx_feeding_logs_entry ON feeding_logs(grow_entry_id, fed_at DESC);
+CREATE INDEX idx_grow_photos_entry ON grow_photos(grow_entry_id);
+CREATE INDEX idx_grow_stage_logs_entry ON grow_stage_logs(grow_entry_id);
diff --git a/cannamanage-domain/src/main/java/de/cannamanage/domain/entity/FeedingLog.java b/cannamanage-domain/src/main/java/de/cannamanage/domain/entity/FeedingLog.java
new file mode 100644
index 0000000..dee917d
--- /dev/null
+++ b/cannamanage-domain/src/main/java/de/cannamanage/domain/entity/FeedingLog.java
@@ -0,0 +1,73 @@
+package de.cannamanage.domain.entity;
+
+import jakarta.persistence.*;
+
+import java.math.BigDecimal;
+import java.time.Instant;
+import java.util.UUID;
+
+@Entity
+@Table(name = "feeding_logs")
+public class FeedingLog {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.UUID)
+    @Column(name = "id", nullable = false, updatable = false)
+    private UUID id;
+
+    @Column(name = "grow_entry_id", nullable = false)
+    private UUID growEntryId;
+
+    @Column(name = "nutrient_name", nullable = false, length = 100)
+    private String nutrientName;
+
+    @Column(name = "amount_ml", nullable = false, precision = 8, scale = 1)
+    private BigDecimal amountMl;
+
+    @Column(name = "water_liters", precision = 8, scale = 1)
+    private BigDecimal waterLiters;
+
+    @Column(name = "ph_after", precision = 4, scale = 2)
+    private BigDecimal phAfter;
+
+    @Column(name = "ec_after", precision = 6, scale = 2)
+    private BigDecimal ecAfter;
+
+    @Column(name = "fed_at", nullable = false)
+    private Instant fedAt;
+
+    @Column(name = "notes", columnDefinition = "TEXT")
+    private String notes;
+
+    @PrePersist
+    void onCreate() {
+        if (this.fedAt == null) this.fedAt = Instant.now();
+    }
+
+    public UUID getId() { return id; }
+    public void setId(UUID id) { this.id = id; }
+
+    public UUID getGrowEntryId() { return growEntryId; }
+    public void setGrowEntryId(UUID growEntryId) { this.growEntryId = growEntryId; }
+
+    public String getNutrientName() { return nutrientName; }
+    public void setNutrientName(String nutrientName) { this.nutrientName = nutrientName; }
+
+    public BigDecimal getAmountMl() { return amountMl; }
+    public void setAmountMl(BigDecimal amountMl) { this.amountMl = amountMl; }
+
+    public BigDecimal getWaterLiters() { return waterLiters; }
+    public void setWaterLiters(BigDecimal waterLiters) { this.waterLiters = waterLiters; }
+
+    public BigDecimal getPhAfter() { return phAfter; }
+    public void setPhAfter(BigDecimal phAfter) { this.phAfter = phAfter; }
+
+    public BigDecimal getEcAfter() { return ecAfter; }
+    public void setEcAfter(BigDecimal ecAfter) { this.ecAfter = ecAfter; }
+
+    public Instant getFedAt() { return fedAt; }
+    public void setFedAt(Instant fedAt) { this.fedAt = fedAt; }
+
+    public String getNotes() { return notes; }
+    public void setNotes(String notes) { this.notes = notes; }
+}
diff --git a/cannamanage-domain/src/main/java/de/cannamanage/domain/entity/GrowEntry.java b/cannamanage-domain/src/main/java/de/cannamanage/domain/entity/GrowEntry.java
new file mode 100644
index 0000000..c740907
--- /dev/null
+++ b/cannamanage-domain/src/main/java/de/cannamanage/domain/entity/GrowEntry.java
@@ -0,0 +1,85 @@
+package de.cannamanage.domain.entity;
+
+import de.cannamanage.domain.enums.GrowStage;
+import jakarta.persistence.*;
+
+import java.math.BigDecimal;
+import java.time.Instant;
+import java.util.UUID;
+
+@Entity
+@Table(name = "grow_entries")
+public class GrowEntry extends AbstractTenantEntity {
+
+    @Column(name = "name", nullable = false)
+    private String name;
+
+    @Column(name = "strain_id")
+    private UUID strainId;
+
+    @Enumerated(EnumType.STRING)
+    @Column(name = "status", nullable = false, length = 30)
+    private GrowStage status = GrowStage.SEEDLING;
+
+    @Column(name = "started_at", nullable = false)
+    private Instant startedAt;
+
+    @Column(name = "expected_harvest_at")
+    private Instant expectedHarvestAt;
+
+    @Column(name = "actual_harvest_at")
+    private Instant actualHarvestAt;
+
+    @Column(name = "harvested_grams", precision = 8, scale = 1)
+    private BigDecimal harvestedGrams;
+
+    @Column(name = "linked_batch_id")
+    private UUID linkedBatchId;
+
+    @Column(name = "notes", columnDefinition = "TEXT")
+    private String notes;
+
+    @Column(name = "updated_at")
+    private Instant updatedAt;
+
+    @PrePersist
+    void onCreateGrow() {
+        if (this.startedAt == null) this.startedAt = Instant.now();
+        this.updatedAt = Instant.now();
+    }
+
+    @PreUpdate
+    void onUpdate() {
+        this.updatedAt = Instant.now();
+    }
+
+    public String getName() { return name; }
+    public void setName(String name) { this.name = name; }
+
+    public UUID getStrainId() { return strainId; }
+    public void setStrainId(UUID strainId) { this.strainId = strainId; }
+
+    public GrowStage getStatus() { return status; }
+    public void setStatus(GrowStage status) { this.status = status; }
+
+    public Instant getStartedAt() { return startedAt; }
+    public void setStartedAt(Instant startedAt) { this.startedAt = startedAt; }
+
+    public Instant getExpectedHarvestAt() { return expectedHarvestAt; }
+    public void setExpectedHarvestAt(Instant expectedHarvestAt) { this.expectedHarvestAt = expectedHarvestAt; }
+
+    public Instant getActualHarvestAt() { return actualHarvestAt; }
+    public void setActualHarvestAt(Instant actualHarvestAt) { this.actualHarvestAt = actualHarvestAt; }
+
+    public BigDecimal getHarvestedGrams() { return harvestedGrams; }
+    public void setHarvestedGrams(BigDecimal harvestedGrams) { this.harvestedGrams = harvestedGrams; }
+
+    public UUID getLinkedBatchId() { return linkedBatchId; }
+    public void setLinkedBatchId(UUID linkedBatchId) { this.linkedBatchId = linkedBatchId; }
+
+    public String getNotes() { return notes; }
+    public void setNotes(String notes) { this.notes = notes; }
+
+    public Instant getUpdatedAt() { return updatedAt; }
+    public void setUpdatedAt(Instant updatedAt) { this.updatedAt = updatedAt; }
+}
diff --git a/cannamanage-domain/src/main/java/de/cannamanage/domain/entity/GrowPhoto.java b/cannamanage-domain/src/main/java/de/cannamanage/domain/entity/GrowPhoto.java
new file mode 100644
index 0000000..2ca1c89
--- /dev/null
+++ b/cannamanage-domain/src/main/java/de/cannamanage/domain/entity/GrowPhoto.java
@@ -0,0 +1,48 @@
+package de.cannamanage.domain.entity;
+
+import jakarta.persistence.*;
+
+import java.time.Instant;
+import java.util.UUID;
+
+@Entity
+@Table(name = "grow_photos")
+public class GrowPhoto {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.UUID)
+    @Column(name = "id", nullable = false, updatable = false)
+    private UUID id;
+
+    @Column(name = "grow_entry_id", nullable = false)
+    private UUID growEntryId;
+
+    @Column(name = "file_path", nullable = false, length = 500)
+    private String filePath;
+
+    @Column(name = "caption", length = 255)
+    private String caption;
+
+    @Column(name = "taken_at", nullable = false)
+    private Instant takenAt;
+
+    @PrePersist
+    void onCreate() {
+        if (this.takenAt == null) this.takenAt = Instant.now();
+    }
+
+    public UUID getId() { return id; }
+    public void setId(UUID id) { this.id = id; }
+
+    public UUID getGrowEntryId() { return growEntryId; }
+    public void setGrowEntryId(UUID growEntryId) { this.growEntryId = growEntryId; }
+
+    public String getFilePath() { return filePath; }
+    public void setFilePath(String filePath) { this.filePath = filePath; }
+
+    public String getCaption() { return caption; }
+    public void setCaption(String caption) { this.caption = caption; }
+
+    public Instant getTakenAt() { return takenAt; }
+    public void setTakenAt(Instant takenAt) { this.takenAt = takenAt; }
+}
diff --git a/cannamanage-domain/src/main/java/de/cannamanage/domain/entity/GrowStageLog.java b/cannamanage-domain/src/main/java/de/cannamanage/domain/entity/GrowStageLog.java
new file mode 100644
index 0000000..a401095
--- /dev/null
+++ b/cannamanage-domain/src/main/java/de/cannamanage/domain/entity/GrowStageLog.java
@@ -0,0 +1,56 @@
+package de.cannamanage.domain.entity;
+
+import de.cannamanage.domain.enums.GrowStage;
+import jakarta.persistence.*;
+
+import java.time.Instant;
+import java.util.UUID;
+
+@Entity
+@Table(name = "grow_stage_logs")
+public class GrowStageLog {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.UUID)
+    @Column(name = "id", nullable = false, updatable = false)
+    private UUID id;
+
+    @Column(name = "grow_entry_id", nullable = false)
+    private UUID growEntryId;
+
+    @Enumerated(EnumType.STRING)
+    @Column(name = "stage", nullable = false, length = 30)
+    private GrowStage stage;
+
+    @Column(name = "started_at", nullable = false)
+    private Instant startedAt;
+
+    @Column(name = "ended_at")
+    private Instant endedAt;
+
+    @Column(name = "notes", columnDefinition = "TEXT")
+    private String notes;
+
+    @PrePersist
+    void onCreate() {
+        if (this.startedAt == null) this.startedAt = Instant.now();
+    }
+
+    public UUID getId() { return id; }
+    public void setId(UUID id) { this.id = id; }
+
+    public UUID getGrowEntryId() { return growEntryId; }
+    public void setGrowEntryId(UUID growEntryId) { this.growEntryId = growEntryId; }
+
+    public GrowStage getStage() { return stage; }
+    public void setStage(GrowStage stage) { this.stage = stage; }
+
+    public Instant getStartedAt() { return startedAt; }
+    public void setStartedAt(Instant startedAt) { this.startedAt = startedAt; }
+
+    public Instant getEndedAt() { return endedAt; }
+    public void setEndedAt(Instant endedAt) { this.endedAt = endedAt; }
+
+    public String getNotes() { return notes; }
+    public void setNotes(String notes) { this.notes = notes; }
+}
diff --git a/cannamanage-domain/src/main/java/de/cannamanage/domain/entity/SensorReading.java b/cannamanage-domain/src/main/java/de/cannamanage/domain/entity/SensorReading.java
new file mode 100644
index 0000000..5957ab8
--- /dev/null
+++ b/cannamanage-domain/src/main/java/de/cannamanage/domain/entity/SensorReading.java
@@ -0,0 +1,57 @@
+package de.cannamanage.domain.entity;
+
+import de.cannamanage.domain.enums.SensorReadingType;
+import jakarta.persistence.*;
+
+import java.math.BigDecimal;
+import java.time.Instant;
+import java.util.UUID;
+
+@Entity
+@Table(name = "sensor_readings")
+public class SensorReading {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.UUID)
+    @Column(name = "id", nullable = false, updatable = false)
+    private UUID id;
+
+    @Column(name = "grow_entry_id", nullable = false)
+    private UUID growEntryId;
+
+    @Enumerated(EnumType.STRING)
+    @Column(name = "reading_type", nullable = false, length = 30)
+    private SensorReadingType readingType;
+
+    @Column(name = "value", nullable = false, precision = 8, scale = 2)
+    private BigDecimal value;
+
+    @Column(name = "unit", nullable = false, length = 10)
+    private String unit;
+
+    @Column(name = "recorded_at", nullable = false)
+    private Instant recordedAt;
+
+    @PrePersist
+    void onCreate() {
+        if (this.recordedAt == null) this.recordedAt = Instant.now();
+    }
+
+    public UUID getId() { return id; }
+    public void setId(UUID id) { this.id = id; }
+
+    public UUID getGrowEntryId() { return growEntryId; }
+    public void setGrowEntryId(UUID growEntryId) { this.growEntryId = growEntryId; }
+
+    public SensorReadingType getReadingType() { return readingType; }
+    public void setReadingType(SensorReadingType readingType) { this.readingType = readingType; }
+
+    public BigDecimal getValue() { return value; }
+    public void setValue(BigDecimal value) { this.value = value; }
+
+    public String getUnit() { return unit; }
+    public void setUnit(String unit) { this.unit = unit; }
+
+    public Instant getRecordedAt() { return recordedAt; }
+    public void setRecordedAt(Instant recordedAt) { this.recordedAt = recordedAt; }
+}
diff --git a/cannamanage-domain/src/main/java/de/cannamanage/domain/enums/GrowStage.java b/cannamanage-domain/src/main/java/de/cannamanage/domain/enums/GrowStage.java
new file mode 100644
index 0000000..b06cfdc
--- /dev/null
+++ b/cannamanage-domain/src/main/java/de/cannamanage/domain/enums/GrowStage.java
@@ -0,0 +1,11 @@
+package de.cannamanage.domain.enums;
+
+public enum GrowStage {
+    SEEDLING,
+    VEGETATIVE,
+    FLOWERING,
+    HARVEST,
+    DRYING,
+    CURING,
+    COMPLETE
+}
diff --git a/cannamanage-domain/src/main/java/de/cannamanage/domain/enums/SensorReadingType.java b/cannamanage-domain/src/main/java/de/cannamanage/domain/enums/SensorReadingType.java
new file mode 100644
index 0000000..8fe2320
--- /dev/null
+++ b/cannamanage-domain/src/main/java/de/cannamanage/domain/enums/SensorReadingType.java
@@ -0,0 +1,9 @@
+package de.cannamanage.domain.enums;
+
+public enum SensorReadingType {
+    TEMPERATURE,
+    HUMIDITY,
+    CO2,
+    PH,
+    EC
+}
diff --git a/cannamanage-frontend/messages/de.json b/cannamanage-frontend/messages/de.json
index 531321d..1c7b826 100644
--- a/cannamanage-frontend/messages/de.json
+++ b/cannamanage-frontend/messages/de.json
@@ -444,5 +444,50 @@
       "PAYMENT_RECEIVED": "Zahlung erhalten",
       "PAYMENT_FAILED": "Zahlung fehlgeschlagen"
     }
+  },
+  "grow": {
+    "title": "Anbau-Kalender",
+    "newGrow": "Neuen Anbau starten",
+    "name": "Anbau-Name",
+    "strain": "Sorte",
+    "stage": "Phase",
+    "startedAt": "Gestartet am",
+    "expectedHarvest": "Erwartete Ernte",
+    "daysInStage": "Tage in Phase",
+    "stages": {
+      "SEEDLING": "Sämling",
+      "VEGETATIVE": "Vegetativ",
+      "FLOWERING": "Blüte",
+      "HARVEST": "Ernte",
+      "DRYING": "Trocknung",
+      "CURING": "Fermentierung",
+      "COMPLETE": "Abgeschlossen"
+    },
+    "advanceStage": "Nächste Phase",
+    "completeHarvest": "Ernte abschließen",
+    "harvestGrams": "Erntemenge (g)",
+    "linkBatch": "Mit Charge verknüpfen",
+    "sensors": "Sensordaten",
+    "addReading": "Messwert hinzufügen",
+    "temperature": "Temperatur",
+    "humidity": "Luftfeuchtigkeit",
+    "co2": "CO₂",
+    "ph": "pH-Wert",
+    "ec": "EC-Wert",
+    "photos": "Fotos",
+    "addPhoto": "Foto hinzufügen",
+    "caption": "Beschriftung",
+    "feeding": "Düngung",
+    "addFeeding": "Düngung hinzufügen",
+    "nutrient": "Nährstoff",
+    "amountMl": "Menge (ml)",
+    "waterLiters": "Wasser (L)",
+    "phAfter": "pH danach",
+    "ecAfter": "EC danach",
+    "timeline": "Verlauf",
+    "noGrows": "Noch keine Anbau-Einträge.",
+    "created": "Anbau gestartet.",
+    "stageAdvanced": "Phase gewechselt zu {stage}.",
+    "harvestComplete": "Ernte abgeschlossen — {grams}g verknüpft mit Charge."
   }
-}
+}
\ No newline at end of file
diff --git a/cannamanage-frontend/messages/en.json b/cannamanage-frontend/messages/en.json
index 444ff03..420eb76 100644
--- a/cannamanage-frontend/messages/en.json
+++ b/cannamanage-frontend/messages/en.json
@@ -444,5 +444,50 @@
       "PAYMENT_RECEIVED": "Payment received",
       "PAYMENT_FAILED": "Payment failed"
     }
+  },
+  "grow": {
+    "title": "Grow Calendar",
+    "newGrow": "Start New Grow",
+    "name": "Grow Name",
+    "strain": "Strain",
+    "stage": "Stage",
+    "startedAt": "Started",
+    "expectedHarvest": "Expected Harvest",
+    "daysInStage": "Days in stage",
+    "stages": {
+      "SEEDLING": "Seedling",
+      "VEGETATIVE": "Vegetative",
+      "FLOWERING": "Flowering",
+      "HARVEST": "Harvest",
+      "DRYING": "Drying",
+      "CURING": "Curing",
+      "COMPLETE": "Complete"
+    },
+    "advanceStage": "Next Stage",
+    "completeHarvest": "Complete Harvest",
+    "harvestGrams": "Harvest (g)",
+    "linkBatch": "Link to Batch",
+    "sensors": "Sensor Data",
+    "addReading": "Add Reading",
+    "temperature": "Temperature",
+    "humidity": "Humidity",
+    "co2": "CO₂",
+    "ph": "pH",
+    "ec": "EC",
+    "photos": "Photos",
+    "addPhoto": "Add Photo",
+    "caption": "Caption",
+    "feeding": "Feeding",
+    "addFeeding": "Add Feeding",
+    "nutrient": "Nutrient",
+    "amountMl": "Amount (ml)",
+    "waterLiters": "Water (L)",
+    "phAfter": "pH after",
+    "ecAfter": "EC after",
+    "timeline": "Timeline",
+    "noGrows": "No grow entries yet.",
+    "created": "Grow started.",
+    "stageAdvanced": "Stage advanced to {stage}.",
+    "harvestComplete": "Harvest completed — {grams}g linked to batch."
   }
-}
+}
\ No newline at end of file
diff --git a/cannamanage-frontend/src/app/(dashboard-layout)/grow/[id]/page.tsx b/cannamanage-frontend/src/app/(dashboard-layout)/grow/[id]/page.tsx
new file mode 100644
index 0000000..553ec24
--- /dev/null
+++ b/cannamanage-frontend/src/app/(dashboard-layout)/grow/[id]/page.tsx
@@ -0,0 +1,269 @@
+"use client"
+
+import { use } from "react"
+import Link from "next/link"
+import { useGrowEntryQuery } from "@/services/grow"
+import { format } from "date-fns"
+import { de } from "date-fns/locale"
+import { useTranslations } from "next-intl"
+import {
+  CartesianGrid,
+  Line,
+  LineChart,
+  ResponsiveContainer,
+  Tooltip,
+  XAxis,
+  YAxis,
+} from "recharts"
+import { ArrowLeft, Camera, Droplets, Thermometer } from "lucide-react"
+
+import type { GrowStage } from "@/services/grow"
+
+import { Badge } from "@/components/ui/badge"
+import { Button } from "@/components/ui/button"
+import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card"
+import { ChartSkeleton, TableSkeleton } from "@/components/ui/data-skeleton"
+import {
+  Table,
+  TableBody,
+  TableCell,
+  TableHead,
+  TableHeader,
+  TableRow,
+} from "@/components/ui/table"
+
+const STAGE_COLORS: Record<GrowStage, string> = {
+  SEEDLING: "bg-lime-500/20 text-lime-700 dark:text-lime-400",
+  VEGETATIVE: "bg-green-500/20 text-green-700 dark:text-green-400",
+  FLOWERING: "bg-purple-500/20 text-purple-700 dark:text-purple-400",
+  HARVEST: "bg-amber-500/20 text-amber-700 dark:text-amber-400",
+  DRYING: "bg-orange-500/20 text-orange-700 dark:text-orange-400",
+  CURING: "bg-yellow-500/20 text-yellow-700 dark:text-yellow-400",
+  COMPLETE: "bg-emerald-500/20 text-emerald-700 dark:text-emerald-400",
+}
+
+export default function GrowDetailPage({
+  params,
+}: {
+  params: Promise<{ id: string }>
+}) {
+  const { id } = use(params)
+  const t = useTranslations("grow")
+  const { data: entry, isLoading } = useGrowEntryQuery(id)
+
+  if (isLoading || !entry) {
+    return (
+      <div className="space-y-6">
+        <ChartSkeleton />
+        <TableSkeleton />
+      </div>
+    )
+  }
+
+  // Prepare sensor chart data (temp + humidity over time)
+  const sensorChartData = entry.sensors
+    .filter(
+      (s) => s.readingType === "TEMPERATURE" || s.readingType === "HUMIDITY"
+    )
+    .reduce(
+      (acc, s) => {
+        const date = format(new Date(s.recordedAt), "dd.MM", { locale: de })
+        const existing = acc.find((d) => d.date === date)
+        if (existing) {
+          if (s.readingType === "TEMPERATURE") existing.temp = s.value
+          if (s.readingType === "HUMIDITY") existing.humidity = s.value
+        } else {
+          acc.push({
+            date,
+            temp: s.readingType === "TEMPERATURE" ? s.value : undefined,
+            humidity: s.readingType === "HUMIDITY" ? s.value : undefined,
+          })
+        }
+        return acc
+      },
+      [] as { date: string; temp?: number; humidity?: number }[]
+    )
+    .reverse()
+
+  return (
+    <div className="space-y-6">
+      {/* Header */}
+      <div className="flex items-center gap-4">
+        <Button variant="ghost" size="icon" asChild>
+          <Link href="/grow">
+            <ArrowLeft className="h-4 w-4" />
+          </Link>
+        </Button>
+        <div className="flex-1">
+          <h1 className="text-2xl font-bold">{entry.name}</h1>
+          <p className="text-sm text-muted-foreground">
+            {t("startedAt")}:{" "}
+            {format(new Date(entry.startedAt), "dd.MM.yyyy", { locale: de })}
+          </p>
+        </div>
+        <Badge className={STAGE_COLORS[entry.status]} variant="secondary">
+          {t(`stages.${entry.status}`)}
+        </Badge>
+      </div>
+
+      {/* Timeline */}
+      <Card>
+        <CardHeader>
+          <CardTitle className="text-base">{t("timeline")}</CardTitle>
+        </CardHeader>
+        <CardContent>
+          <div className="relative space-y-3">
+            {entry.stages.map((stage, _i) => (
+              <div key={stage.id} className="flex items-start gap-3">
+                <div
+                  className={`mt-1 h-3 w-3 rounded-full ${
+                    stage.endedAt ? "bg-primary" : "bg-primary animate-pulse"
+                  }`}
+                />
+                <div className="flex-1">
+                  <div className="flex items-center gap-2">
+                    <Badge
+                      variant="secondary"
+                      className={STAGE_COLORS[stage.stage]}
+                    >
+                      {t(`stages.${stage.stage}`)}
+                    </Badge>
+                    <span className="text-xs text-muted-foreground">
+                      {format(new Date(stage.startedAt), "dd.MM.yyyy", {
+                        locale: de,
+                      })}
+                      {stage.endedAt &&
+                        ` — ${format(new Date(stage.endedAt), "dd.MM.yyyy", { locale: de })}`}
+                    </span>
+                  </div>
+                  {stage.notes && (
+                    <p className="mt-1 text-sm text-muted-foreground">
+                      {stage.notes}
+                    </p>
+                  )}
+                </div>
+              </div>
+            ))}
+          </div>
+        </CardContent>
+      </Card>
+
+      {/* Sensor Chart */}
+      {sensorChartData.length > 0 && (
+        <Card>
+          <CardHeader>
+            <CardTitle className="flex items-center gap-2 text-base">
+              <Thermometer className="h-4 w-4" />
+              {t("sensors")}
+            </CardTitle>
+          </CardHeader>
+          <CardContent>
+            <ResponsiveContainer width="100%" height={250}>
+              <LineChart data={sensorChartData}>
+                <CartesianGrid strokeDasharray="3 3" />
+                <XAxis dataKey="date" fontSize={12} />
+                <YAxis yAxisId="temp" orientation="left" domain={[18, 30]} />
+                <YAxis yAxisId="hum" orientation="right" domain={[40, 80]} />
+                <Tooltip />
+                <Line
+                  yAxisId="temp"
+                  type="monotone"
+                  dataKey="temp"
+                  stroke="#ef4444"
+                  strokeWidth={2}
+                  name={t("temperature")}
+                  dot={false}
+                />
+                <Line
+                  yAxisId="hum"
+                  type="monotone"
+                  dataKey="humidity"
+                  stroke="#3b82f6"
+                  strokeWidth={2}
+                  name={t("humidity")}
+                  dot={false}
+                />
+              </LineChart>
+            </ResponsiveContainer>
+          </CardContent>
+        </Card>
+      )}
+
+      {/* Feeding Log */}
+      {entry.feedings.length > 0 && (
+        <Card>
+          <CardHeader>
+            <CardTitle className="flex items-center gap-2 text-base">
+              <Droplets className="h-4 w-4" />
+              {t("feeding")}
+            </CardTitle>
+          </CardHeader>
+          <CardContent>
+            <Table>
+              <TableHeader>
+                <TableRow>
+                  <TableHead>Datum</TableHead>
+                  <TableHead>{t("nutrient")}</TableHead>
+                  <TableHead>{t("amountMl")}</TableHead>
+                  <TableHead>{t("waterLiters")}</TableHead>
+                  <TableHead>{t("phAfter")}</TableHead>
+                  <TableHead>{t("ecAfter")}</TableHead>
+                </TableRow>
+              </TableHeader>
+              <TableBody>
+                {entry.feedings.map((f) => (
+                  <TableRow key={f.id}>
+                    <TableCell>
+                      {format(new Date(f.fedAt), "dd.MM.yyyy", {
+                        locale: de,
+                      })}
+                    </TableCell>
+                    <TableCell>{f.nutrientName}</TableCell>
+                    <TableCell>{f.amountMl} ml</TableCell>
+                    <TableCell>
+                      {f.waterLiters ? `${f.waterLiters} L` : "—"}
+                    </TableCell>
+                    <TableCell>{f.phAfter ?? "—"}</TableCell>
+                    <TableCell>{f.ecAfter ?? "—"}</TableCell>
+                  </TableRow>
+                ))}
+              </TableBody>
+            </Table>
+          </CardContent>
+        </Card>
+      )}
+
+      {/* Photos */}
+      {entry.photos.length > 0 && (
+        <Card>
+          <CardHeader>
+            <CardTitle className="flex items-center gap-2 text-base">
+              <Camera className="h-4 w-4" />
+              {t("photos")} ({entry.photos.length})
+            </CardTitle>
+          </CardHeader>
+          <CardContent>
+            <div className="grid gap-4 sm:grid-cols-2 md:grid-cols-3">
+              {entry.photos.map((photo) => (
+                <div
+                  key={photo.id}
+                  className="rounded-lg border bg-muted/50 p-4 text-center"
+                >
+                  <Camera className="mx-auto mb-2 h-8 w-8 text-muted-foreground" />
+                  <p className="text-sm font-medium">
+                    {photo.caption ?? "Foto"}
+                  </p>
+                  <p className="text-xs text-muted-foreground">
+                    {format(new Date(photo.takenAt), "dd.MM.yyyy", {
+                      locale: de,
+                    })}
+                  </p>
+                </div>
+              ))}
+            </div>
+          </CardContent>
+        </Card>
+      )}
+    </div>
+  )
+}
diff --git a/cannamanage-frontend/src/app/(dashboard-layout)/grow/page.tsx b/cannamanage-frontend/src/app/(dashboard-layout)/grow/page.tsx
new file mode 100644
index 0000000..8c00ac3
--- /dev/null
+++ b/cannamanage-frontend/src/app/(dashboard-layout)/grow/page.tsx
@@ -0,0 +1,138 @@
+"use client"
+
+import Link from "next/link"
+import { useGrowEntriesQuery } from "@/services/grow"
+import { formatDistanceToNow } from "date-fns"
+import { de } from "date-fns/locale"
+import { useTranslations } from "next-intl"
+import { Leaf, Plus, Sprout } from "lucide-react"
+
+import type { GrowStage } from "@/services/grow"
+
+import { Badge } from "@/components/ui/badge"
+import { Button } from "@/components/ui/button"
+import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card"
+import { TableSkeleton } from "@/components/ui/data-skeleton"
+
+const STAGE_COLORS: Record<GrowStage, string> = {
+  SEEDLING: "bg-lime-500/20 text-lime-700 dark:text-lime-400",
+  VEGETATIVE: "bg-green-500/20 text-green-700 dark:text-green-400",
+  FLOWERING: "bg-purple-500/20 text-purple-700 dark:text-purple-400",
+  HARVEST: "bg-amber-500/20 text-amber-700 dark:text-amber-400",
+  DRYING: "bg-orange-500/20 text-orange-700 dark:text-orange-400",
+  CURING: "bg-yellow-500/20 text-yellow-700 dark:text-yellow-400",
+  COMPLETE: "bg-emerald-500/20 text-emerald-700 dark:text-emerald-400",
+}
+
+const STAGES_ORDER: GrowStage[] = [
+  "SEEDLING",
+  "VEGETATIVE",
+  "FLOWERING",
+  "HARVEST",
+  "DRYING",
+  "CURING",
+  "COMPLETE",
+]
+
+export default function GrowPage() {
+  const t = useTranslations("grow")
+  const { data: entries, isLoading } = useGrowEntriesQuery()
+
+  if (isLoading) {
+    return (
+      <div className="space-y-6">
+        <div className="flex items-center justify-between">
+          <h1 className="text-2xl font-bold">{t("title")}</h1>
+        </div>
+        <TableSkeleton />
+      </div>
+    )
+  }
+
+  const growEntries = entries ?? []
+
+  return (
+    <div className="space-y-6">
+      <div className="flex items-center justify-between">
+        <h1 className="text-2xl font-bold">{t("title")}</h1>
+        <Button asChild>
+          <Link href="/grow/new">
+            <Plus className="mr-2 h-4 w-4" />
+            {t("newGrow")}
+          </Link>
+        </Button>
+      </div>
+
+      {growEntries.length === 0 ? (
+        <Card>
+          <CardContent className="flex flex-col items-center justify-center py-12">
+            <Sprout className="mb-4 h-12 w-12 text-muted-foreground" />
+            <p className="text-muted-foreground">{t("noGrows")}</p>
+          </CardContent>
+        </Card>
+      ) : (
+        <div className="grid gap-4 md:grid-cols-2 lg:grid-cols-3">
+          {growEntries.map((entry) => {
+            const stageIndex = STAGES_ORDER.indexOf(entry.status)
+            const daysInStage = formatDistanceToNow(new Date(entry.startedAt), {
+              locale: de,
+              addSuffix: false,
+            })
+
+            return (
+              <Link key={entry.id} href={`/grow/${entry.id}`}>
+                <Card className="transition-shadow hover:shadow-md">
+                  <CardHeader className="pb-3">
+                    <div className="flex items-start justify-between">
+                      <CardTitle className="text-base">{entry.name}</CardTitle>
+                      <Badge
+                        className={STAGE_COLORS[entry.status]}
+                        variant="secondary"
+                      >
+                        {t(`stages.${entry.status}`)}
+                      </Badge>
+                    </div>
+                  </CardHeader>
+                  <CardContent className="space-y-3">
+                    {/* Stage progress indicator */}
+                    <div className="flex items-center gap-1">
+                      {STAGES_ORDER.map((stage, i) => (
+                        <div
+                          key={stage}
+                          className={`h-2 flex-1 rounded-full ${
+                            i <= stageIndex ? "bg-primary" : "bg-muted"
+                          }`}
+                        />
+                      ))}
+                    </div>
+
+                    <div className="flex items-center justify-between text-sm text-muted-foreground">
+                      <span>
+                        <Leaf className="mr-1 inline h-3.5 w-3.5" />
+                        {t("daysInStage")}: {daysInStage}
+                      </span>
+                      {entry.expectedHarvestAt && (
+                        <span>
+                          {t("expectedHarvest")}:{" "}
+                          {new Date(entry.expectedHarvestAt).toLocaleDateString(
+                            "de-DE"
+                          )}
+                        </span>
+                      )}
+                    </div>
+
+                    {entry.harvestedGrams && (
+                      <div className="text-sm font-medium text-emerald-600 dark:text-emerald-400">
+                        🌿 {entry.harvestedGrams}g {t("harvestGrams")}
+                      </div>
+                    )}
+                  </CardContent>
+                </Card>
+              </Link>
+            )
+          })}
+        </div>
+      )}
+    </div>
+  )
+}
diff --git a/cannamanage-frontend/src/data/mock/grow.ts b/cannamanage-frontend/src/data/mock/grow.ts
new file mode 100644
index 0000000..a6b2bb2
--- /dev/null
+++ b/cannamanage-frontend/src/data/mock/grow.ts
@@ -0,0 +1,186 @@
+import type { GrowEntry, GrowEntryDetail } from "@/services/grow"
+
+function daysAgo(days: number): string {
+  const d = new Date()
+  d.setDate(d.getDate() - days)
+  return d.toISOString()
+}
+
+function daysFromNow(days: number): string {
+  const d = new Date()
+  d.setDate(d.getDate() + days)
+  return d.toISOString()
+}
+
+export const mockGrowEntries: GrowEntry[] = [
+  {
+    id: "grow-001",
+    name: "Amnesia Haze Runde 3",
+    strainId: "s-001",
+    status: "FLOWERING",
+    startedAt: daysAgo(55),
+    expectedHarvestAt: daysFromNow(25),
+    actualHarvestAt: null,
+    harvestedGrams: null,
+    linkedBatchId: null,
+    notes: "Sehr kräftiger Wuchs, 4 Pflanzen",
+  },
+  {
+    id: "grow-002",
+    name: "White Widow Indoor",
+    strainId: "s-002",
+    status: "DRYING",
+    startedAt: daysAgo(95),
+    expectedHarvestAt: daysAgo(5),
+    actualHarvestAt: daysAgo(5),
+    harvestedGrams: 320,
+    linkedBatchId: null,
+    notes: "Ernte war ertragreich, jetzt in Trocknung",
+  },
+  {
+    id: "grow-003",
+    name: "Northern Lights Micro",
+    strainId: "s-003",
+    status: "COMPLETE",
+    startedAt: daysAgo(140),
+    expectedHarvestAt: daysAgo(40),
+    actualHarvestAt: daysAgo(42),
+    harvestedGrams: 185.5,
+    linkedBatchId: "b-001",
+    notes: "Fertig, verknüpft mit Charge B-2024-003",
+  },
+]
+
+export function mockGrowDetail(id: string): GrowEntryDetail {
+  const entry = mockGrowEntries.find((e) => e.id === id) ?? mockGrowEntries[0]
+  return {
+    ...entry,
+    stages: [
+      {
+        id: "stg-1",
+        stage: "SEEDLING",
+        startedAt: entry.startedAt,
+        endedAt: daysAgo(40),
+        notes: null,
+      },
+      {
+        id: "stg-2",
+        stage: "VEGETATIVE",
+        startedAt: daysAgo(40),
+        endedAt: daysAgo(20),
+        notes: "Topped einmal",
+      },
+      {
+        id: "stg-3",
+        stage: "FLOWERING",
+        startedAt: daysAgo(20),
+        endedAt: null,
+        notes: null,
+      },
+    ],
+    sensors: [
+      {
+        id: "sr-1",
+        readingType: "TEMPERATURE",
+        value: 24.5,
+        unit: "°C",
+        recordedAt: daysAgo(1),
+      },
+      {
+        id: "sr-2",
+        readingType: "HUMIDITY",
+        value: 55,
+        unit: "%",
+        recordedAt: daysAgo(1),
+      },
+      {
+        id: "sr-3",
+        readingType: "TEMPERATURE",
+        value: 23.8,
+        unit: "°C",
+        recordedAt: daysAgo(2),
+      },
+      {
+        id: "sr-4",
+        readingType: "HUMIDITY",
+        value: 58,
+        unit: "%",
+        recordedAt: daysAgo(2),
+      },
+      {
+        id: "sr-5",
+        readingType: "TEMPERATURE",
+        value: 25.1,
+        unit: "°C",
+        recordedAt: daysAgo(3),
+      },
+      {
+        id: "sr-6",
+        readingType: "HUMIDITY",
+        value: 52,
+        unit: "%",
+        recordedAt: daysAgo(3),
+      },
+      {
+        id: "sr-7",
+        readingType: "PH",
+        value: 6.2,
+        unit: "pH",
+        recordedAt: daysAgo(2),
+      },
+      {
+        id: "sr-8",
+        readingType: "EC",
+        value: 1.8,
+        unit: "mS/cm",
+        recordedAt: daysAgo(2),
+      },
+    ],
+    photos: [
+      {
+        id: "ph-1",
+        filePath: "/uploads/grow-001/week6.jpg",
+        caption: "Woche 6 — Blüte beginnt",
+        takenAt: daysAgo(5),
+      },
+      {
+        id: "ph-2",
+        filePath: "/uploads/grow-001/week4.jpg",
+        caption: "Woche 4 — Vegetativ",
+        takenAt: daysAgo(20),
+      },
+    ],
+    feedings: [
+      {
+        id: "fl-1",
+        nutrientName: "BioBizz Bloom",
+        amountMl: 4,
+        waterLiters: 2,
+        phAfter: 6.3,
+        ecAfter: 1.9,
+        fedAt: daysAgo(1),
+        notes: null,
+      },
+      {
+        id: "fl-2",
+        nutrientName: "BioBizz Top-Max",
+        amountMl: 2,
+        waterLiters: 2,
+        phAfter: 6.1,
+        ecAfter: 1.7,
+        fedAt: daysAgo(3),
+        notes: null,
+      },
+      {
+        id: "fl-3",
+        nutrientName: "CalMag",
+        amountMl: 1,
+        waterLiters: 2,
+        phAfter: 6.4,
+        ecAfter: 1.6,
+        fedAt: daysAgo(5),
+        notes: "Leichte Blattflecken",
+      },
+    ],
+  }
+}
diff --git a/cannamanage-frontend/src/data/navigations.ts b/cannamanage-frontend/src/data/navigations.ts
index be91aa4..1eb0ff4 100644
--- a/cannamanage-frontend/src/data/navigations.ts
+++ b/cannamanage-frontend/src/data/navigations.ts
@@ -24,6 +24,11 @@ export const navigationsData: NavigationType[] = [
         href: "/stock",
         iconName: "Package",
       },
+      {
+        title: "Anbau",
+        href: "/grow",
+        iconName: "Sprout",
+      },
       {
         title: "Berichte",
         href: "/reports",
diff --git a/cannamanage-frontend/src/services/grow.ts b/cannamanage-frontend/src/services/grow.ts
new file mode 100644
index 0000000..39a9333
--- /dev/null
+++ b/cannamanage-frontend/src/services/grow.ts
@@ -0,0 +1,201 @@
+import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query"
+
+import { mockGrowDetail, mockGrowEntries } from "@/data/mock/grow"
+
+import { apiClient } from "@/lib/api-client"
+
+// --- Types ---
+
+export type GrowStage =
+  | "SEEDLING"
+  | "VEGETATIVE"
+  | "FLOWERING"
+  | "HARVEST"
+  | "DRYING"
+  | "CURING"
+  | "COMPLETE"
+
+export type SensorReadingType = "TEMPERATURE" | "HUMIDITY" | "CO2" | "PH" | "EC"
+
+export interface GrowEntry {
+  id: string
+  name: string
+  strainId: string | null
+  status: GrowStage
+  startedAt: string
+  expectedHarvestAt: string | null
+  actualHarvestAt: string | null
+  harvestedGrams: number | null
+  linkedBatchId: string | null
+  notes: string | null
+}
+
+export interface GrowStageLog {
+  id: string
+  stage: GrowStage
+  startedAt: string
+  endedAt: string | null
+  notes: string | null
+}
+
+export interface SensorReading {
+  id: string
+  readingType: SensorReadingType
+  value: number
+  unit: string
+  recordedAt: string
+}
+
+export interface GrowPhoto {
+  id: string
+  filePath: string
+  caption: string | null
+  takenAt: string
+}
+
+export interface FeedingLog {
+  id: string
+  nutrientName: string
+  amountMl: number
+  waterLiters: number | null
+  phAfter: number | null
+  ecAfter: number | null
+  fedAt: string
+  notes: string | null
+}
+
+export interface GrowEntryDetail extends GrowEntry {
+  stages: GrowStageLog[]
+  sensors: SensorReading[]
+  photos: GrowPhoto[]
+  feedings: FeedingLog[]
+}
+
+// --- Query Hooks ---
+
+export function useGrowEntriesQuery() {
+  return useQuery({
+    queryKey: ["grow"],
+    queryFn: async () => {
+      try {
+        return await apiClient<GrowEntry[]>("/grow")
+      } catch {
+        return mockGrowEntries
+      }
+    },
+  })
+}
+
+export function useGrowEntryQuery(id: string) {
+  return useQuery({
+    queryKey: ["grow", id],
+    queryFn: async () => {
+      try {
+        return await apiClient<GrowEntryDetail>(`/grow/${id}`)
+      } catch {
+        return mockGrowDetail(id)
+      }
+    },
+    enabled: !!id,
+  })
+}
+
+// --- Mutation Hooks ---
+
+export function useCreateGrowEntryMutation() {
+  const queryClient = useQueryClient()
+  return useMutation({
+    mutationFn: (data: {
+      name: string
+      strainId?: string
+      notes?: string
+      expectedHarvestAt?: string
+    }) => apiClient<GrowEntry>("/grow", { method: "POST", body: data }),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ["grow"] })
+    },
+  })
+}
+
+export function useAdvanceStageMutation(id: string) {
+  const queryClient = useQueryClient()
+  return useMutation({
+    mutationFn: (stage: GrowStage) =>
+      apiClient<GrowEntry>(`/grow/${id}/stage`, {
+        method: "PUT",
+        body: { stage },
+      }),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ["grow"] })
+      queryClient.invalidateQueries({ queryKey: ["grow", id] })
+    },
+  })
+}
+
+export function useAddSensorReadingMutation(id: string) {
+  const queryClient = useQueryClient()
+  return useMutation({
+    mutationFn: (data: {
+      readingType: SensorReadingType
+      value: number
+      unit: string
+    }) =>
+      apiClient<SensorReading>(`/grow/${id}/sensors`, {
+        method: "POST",
+        body: data,
+      }),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ["grow", id] })
+    },
+  })
+}
+
+export function useAddPhotoMutation(id: string) {
+  const queryClient = useQueryClient()
+  return useMutation({
+    mutationFn: (data: { filePath: string; caption?: string }) =>
+      apiClient<GrowPhoto>(`/grow/${id}/photos`, {
+        method: "POST",
+        body: data,
+      }),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ["grow", id] })
+    },
+  })
+}
+
+export function useAddFeedingLogMutation(id: string) {
+  const queryClient = useQueryClient()
+  return useMutation({
+    mutationFn: (data: {
+      nutrientName: string
+      amountMl: number
+      waterLiters?: number
+      phAfter?: number
+      ecAfter?: number
+      notes?: string
+    }) =>
+      apiClient<FeedingLog>(`/grow/${id}/feedings`, {
+        method: "POST",
+        body: data,
+      }),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ["grow", id] })
+    },
+  })
+}
+
+export function useCompleteHarvestMutation(id: string) {
+  const queryClient = useQueryClient()
+  return useMutation({
+    mutationFn: (data: { harvestedGrams: number; linkedBatchId?: string }) =>
+      apiClient<GrowEntry>(`/grow/${id}/harvest`, {
+        method: "PUT",
+        body: data,
+      }),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ["grow"] })
+      queryClient.invalidateQueries({ queryKey: ["grow", id] })
+    },
+  })
+}
diff --git a/cannamanage-service/src/main/java/de/cannamanage/service/GrowCalendarService.java b/cannamanage-service/src/main/java/de/cannamanage/service/GrowCalendarService.java
new file mode 100644
index 0000000..59d8163
--- /dev/null
+++ b/cannamanage-service/src/main/java/de/cannamanage/service/GrowCalendarService.java
@@ -0,0 +1,189 @@
+package de.cannamanage.service;
+
+import de.cannamanage.domain.entity.*;
+import de.cannamanage.domain.enums.GrowStage;
+import de.cannamanage.domain.enums.SensorReadingType;
+import de.cannamanage.service.repository.*;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.http.HttpStatus;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import org.springframework.web.server.ResponseStatusException;
+
+import java.math.BigDecimal;
+import java.time.Instant;
+import java.util.List;
+import java.util.UUID;
+
+@Slf4j
+@Service
+@RequiredArgsConstructor
+public class GrowCalendarService {
+
+    private final GrowEntryRepository growEntryRepository;
+    private final GrowStageLogRepository growStageLogRepository;
+    private final SensorReadingRepository sensorReadingRepository;
+    private final GrowPhotoRepository growPhotoRepository;
+    private final FeedingLogRepository feedingLogRepository;
+    private final BatchRepository batchRepository;
+
+    @Transactional(readOnly = true)
+    public List<GrowEntry> getGrowEntries() {
+        return growEntryRepository.findAllByOrderByStartedAtDesc();
+    }
+
+    @Transactional(readOnly = true)
+    public GrowEntry getGrowEntry(UUID id) {
+        return growEntryRepository.findById(id)
+                .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "Grow entry not found"));
+    }
+
+    @Transactional
+    public GrowEntry createGrowEntry(String name, UUID strainId, String notes, Instant expectedHarvestAt) {
+        GrowEntry entry = new GrowEntry();
+        entry.setName(name);
+        entry.setStrainId(strainId);
+        entry.setStatus(GrowStage.SEEDLING);
+        entry.setStartedAt(Instant.now());
+        entry.setExpectedHarvestAt(expectedHarvestAt);
+        entry.setNotes(notes);
+
+        GrowEntry saved = growEntryRepository.save(entry);
+
+        // Create initial stage log
+        GrowStageLog stageLog = new GrowStageLog();
+        stageLog.setGrowEntryId(saved.getId());
+        stageLog.setStage(GrowStage.SEEDLING);
+        stageLog.setStartedAt(Instant.now());
+        growStageLogRepository.save(stageLog);
+
+        log.debug("Created grow entry: {} with stage SEEDLING", saved.getId());
+        return saved;
+    }
+
+    @Transactional
+    public GrowEntry advanceStage(UUID entryId, GrowStage newStage) {
+        GrowEntry entry = getGrowEntry(entryId);
+
+        // Close the current stage log
+        List<GrowStageLog> logs = growStageLogRepository.findByGrowEntryIdOrderByStartedAtAsc(entryId);
+        if (!logs.isEmpty()) {
+            GrowStageLog currentLog = logs.get(logs.size() - 1);
+            if (currentLog.getEndedAt() == null) {
+                currentLog.setEndedAt(Instant.now());
+                growStageLogRepository.save(currentLog);
+            }
+        }
+
+        // Create new stage log
+        GrowStageLog newLog = new GrowStageLog();
+        newLog.setGrowEntryId(entryId);
+        newLog.setStage(newStage);
+        newLog.setStartedAt(Instant.now());
+        growStageLogRepository.save(newLog);
+
+        // Update entry status
+        entry.setStatus(newStage);
+        log.debug("Advanced grow entry {} to stage {}", entryId, newStage);
+        return growEntryRepository.save(entry);
+    }
+
+    @Transactional
+    public SensorReading addSensorReading(UUID entryId, SensorReadingType type, BigDecimal value, String unit) {
+        // Verify entry exists
+        getGrowEntry(entryId);
+
+        SensorReading reading = new SensorReading();
+        reading.setGrowEntryId(entryId);
+        reading.setReadingType(type);
+        reading.setValue(value);
+        reading.setUnit(unit);
+        reading.setRecordedAt(Instant.now());
+        return sensorReadingRepository.save(reading);
+    }
+
+    @Transactional
+    public GrowPhoto addPhoto(UUID entryId, String filePath, String caption) {
+        getGrowEntry(entryId);
+
+        GrowPhoto photo = new GrowPhoto();
+        photo.setGrowEntryId(entryId);
+        photo.setFilePath(filePath);
+        photo.setCaption(caption);
+        photo.setTakenAt(Instant.now());
+        return growPhotoRepository.save(photo);
+    }
+
+    @Transactional
+    public FeedingLog addFeedingLog(UUID entryId, String nutrientName, BigDecimal amountMl,
+                                     BigDecimal waterLiters, BigDecimal phAfter, BigDecimal ecAfter, String notes) {
+        getGrowEntry(entryId);
+
+        FeedingLog feeding = new FeedingLog();
+        feeding.setGrowEntryId(entryId);
+        feeding.setNutrientName(nutrientName);
+        feeding.setAmountMl(amountMl);
+        feeding.setWaterLiters(waterLiters);
+        feeding.setPhAfter(phAfter);
+        feeding.setEcAfter(ecAfter);
+        feeding.setFedAt(Instant.now());
+        feeding.setNotes(notes);
+        return feedingLogRepository.save(feeding);
+    }
+
+    @Transactional
+    public GrowEntry completeHarvest(UUID entryId, BigDecimal grams, UUID batchId) {
+        GrowEntry entry = getGrowEntry(entryId);
+
+        if (batchId != null) {
+            batchRepository.findById(batchId)
+                    .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "Batch not found"));
+            entry.setLinkedBatchId(batchId);
+        }
+
+        entry.setHarvestedGrams(grams);
+        entry.setActualHarvestAt(Instant.now());
+        entry.setStatus(GrowStage.COMPLETE);
+
+        // Close stage log
+        List<GrowStageLog> logs = growStageLogRepository.findByGrowEntryIdOrderByStartedAtAsc(entryId);
+        if (!logs.isEmpty()) {
+            GrowStageLog currentLog = logs.get(logs.size() - 1);
+            if (currentLog.getEndedAt() == null) {
+                currentLog.setEndedAt(Instant.now());
+                growStageLogRepository.save(currentLog);
+            }
+        }
+
+        // Create COMPLETE stage log
+        GrowStageLog completeLog = new GrowStageLog();
+        completeLog.setGrowEntryId(entryId);
+        completeLog.setStage(GrowStage.COMPLETE);
+        completeLog.setStartedAt(Instant.now());
+        growStageLogRepository.save(completeLog);
+
+        log.debug("Completed harvest for grow entry {}: {}g", entryId, grams);
+        return growEntryRepository.save(entry);
+    }
+
+    @Transactional(readOnly = true)
+    public List<GrowStageLog> getStageLogs(UUID entryId) {
+        return growStageLogRepository.findByGrowEntryIdOrderByStartedAtAsc(entryId);
+    }
+
+    @Transactional(readOnly = true)
+    public List<SensorReading> getSensorReadings(UUID entryId) {
+        return sensorReadingRepository.findByGrowEntryIdOrderByRecordedAtDesc(entryId);
+    }
+
+    @Transactional(readOnly = true)
+    public List<GrowPhoto> getPhotos(UUID entryId) {
+        return growPhotoRepository.findByGrowEntryIdOrderByTakenAtDesc(entryId);
+    }
+
+    @Transactional(readOnly = true)
+    public List<FeedingLog> getFeedingLogs(UUID entryId) {
+        return feedingLogRepository.findByGrowEntryIdOrderByFedAtDesc(entryId);
+    }
+}
diff --git a/cannamanage-service/src/main/java/de/cannamanage/service/repository/FeedingLogRepository.java b/cannamanage-service/src/main/java/de/cannamanage/service/repository/FeedingLogRepository.java
new file mode 100644
index 0000000..cff1d19
--- /dev/null
+++ b/cannamanage-service/src/main/java/de/cannamanage/service/repository/FeedingLogRepository.java
@@ -0,0 +1,11 @@
+package de.cannamanage.service.repository;
+
+import de.cannamanage.domain.entity.FeedingLog;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.List;
+import java.util.UUID;
+
+public interface FeedingLogRepository extends JpaRepository<FeedingLog, UUID> {
+    List<FeedingLog> findByGrowEntryIdOrderByFedAtDesc(UUID growEntryId);
+}
diff --git a/cannamanage-service/src/main/java/de/cannamanage/service/repository/GrowEntryRepository.java b/cannamanage-service/src/main/java/de/cannamanage/service/repository/GrowEntryRepository.java
new file mode 100644
index 0000000..477023d
--- /dev/null
+++ b/cannamanage-service/src/main/java/de/cannamanage/service/repository/GrowEntryRepository.java
@@ -0,0 +1,11 @@
+package de.cannamanage.service.repository;
+
+import de.cannamanage.domain.entity.GrowEntry;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.List;
+import java.util.UUID;
+
+public interface GrowEntryRepository extends JpaRepository<GrowEntry, UUID> {
+    List<GrowEntry> findAllByOrderByStartedAtDesc();
+}
diff --git a/cannamanage-service/src/main/java/de/cannamanage/service/repository/GrowPhotoRepository.java b/cannamanage-service/src/main/java/de/cannamanage/service/repository/GrowPhotoRepository.java
new file mode 100644
index 0000000..b55687a
--- /dev/null
+++ b/cannamanage-service/src/main/java/de/cannamanage/service/repository/GrowPhotoRepository.java
@@ -0,0 +1,11 @@
+package de.cannamanage.service.repository;
+
+import de.cannamanage.domain.entity.GrowPhoto;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.List;
+import java.util.UUID;
+
+public interface GrowPhotoRepository extends JpaRepository<GrowPhoto, UUID> {
+    List<GrowPhoto> findByGrowEntryIdOrderByTakenAtDesc(UUID growEntryId);
+}
diff --git a/cannamanage-service/src/main/java/de/cannamanage/service/repository/GrowStageLogRepository.java b/cannamanage-service/src/main/java/de/cannamanage/service/repository/GrowStageLogRepository.java
new file mode 100644
index 0000000..e0c1b7a
--- /dev/null
+++ b/cannamanage-service/src/main/java/de/cannamanage/service/repository/GrowStageLogRepository.java
@@ -0,0 +1,11 @@
+package de.cannamanage.service.repository;
+
+import de.cannamanage.domain.entity.GrowStageLog;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.List;
+import java.util.UUID;
+
+public interface GrowStageLogRepository extends JpaRepository<GrowStageLog, UUID> {
+    List<GrowStageLog> findByGrowEntryIdOrderByStartedAtAsc(UUID growEntryId);
+}
diff --git a/cannamanage-service/src/main/java/de/cannamanage/service/repository/SensorReadingRepository.java b/cannamanage-service/src/main/java/de/cannamanage/service/repository/SensorReadingRepository.java
new file mode 100644
index 0000000..b7334d7
--- /dev/null
+++ b/cannamanage-service/src/main/java/de/cannamanage/service/repository/SensorReadingRepository.java
@@ -0,0 +1,11 @@
+package de.cannamanage.service.repository;
+
+import de.cannamanage.domain.entity.SensorReading;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.List;
+import java.util.UUID;
+
+public interface SensorReadingRepository extends JpaRepository<SensorReading, UUID> {
+    List<SensorReading> findByGrowEntryIdOrderByRecordedAtDesc(UUID growEntryId);
+}