plant model: @Enumerated annotation on enum fields

src/main/java/hdm/mi/growbros/models/plant/Plant.java

 package hdm.mi.growbros.models.plant;
 
-import jakarta.persistence.Column;
-import jakarta.persistence.Entity;
-import jakarta.persistence.GeneratedValue;
-import jakarta.persistence.Id;
+import jakarta.persistence.*;
 import jakarta.validation.constraints.Max;
 import jakarta.validation.constraints.Min;
 import jakarta.validation.constraints.NotBlank;
@@ -56,9 +53,16 @@ public class Plant {
     @Max(51)
     private int harvestWeekEnd;
 
+    @Enumerated(EnumType.STRING)
     private GroundType groundType;
+
+    @Enumerated(EnumType.STRING)
     private NutrientDemand nutrientDemand;
+
+    @Enumerated(EnumType.STRING)
     private WaterDemand waterDemand;
+
+    @Enumerated(EnumType.STRING)
     private LightingDemand lightingDemand;
 
     @URL