diff --git a/popcorn/Assets/MyGame/Scenes/CornField/Scripts/CornField.cs b/popcorn/Assets/MyGame/Scenes/CornField/Scripts/CornField.cs
index c7e95500..21b6ca28 100644
--- a/popcorn/Assets/MyGame/Scenes/CornField/Scripts/CornField.cs
+++ b/popcorn/Assets/MyGame/Scenes/CornField/Scripts/CornField.cs
@@ -77,6 +77,12 @@ public class CornField : MonoBehaviour
                 var index = i;
                 i++;
                 seedling.SetSeedlingGene(lineData.Seedlings[index].FirstTime, lineData.Seedlings[index].Period, lineData.Seedlings[index].Level);
+#if DEVELOPMENT_BUILD || UNITY_EDITOR
+                if (UsayaStorageManager.LoadOrDefault(UsayaStorageFilename.Settings_Data, "DebugFastGrowing", false))
+                {
+                    seedling.SetSeedlingGene(lineData.Seedlings[index].FirstTime, lineData.Seedlings[index].Period / 3, lineData.Seedlings[index].Level);
+                }
+#endif
                 seedling.Harvested.Subscribe(_ =>
                 {
                     // 収穫
@@ -113,6 +119,12 @@ public class CornField : MonoBehaviour
                     // 新しい苗
                     var newGene = GenerateSeedlingGene(line.FieldLevel);
                     seedling.SetSeedlingGene(newGene.FirstTime, newGene.Period, newGene.Level);
+#if DEVELOPMENT_BUILD || UNITY_EDITOR
+                    if (UsayaStorageManager.LoadOrDefault(UsayaStorageFilename.Settings_Data, "DebugFastGrowing", false))
+                    {
+                        seedling.SetSeedlingGene(newGene.FirstTime, newGene.Period / 3, newGene.Level);
+                    }
+#endif
                     gameData.SeedlingDataList[seedlingDataIndex].Seedlings[index] = newGene;
                     GameDataManager.SaveGameData();
                 }).AddTo(compositeDisposable);
@@ -208,8 +220,7 @@ public class CornField : MonoBehaviour
 
     private SeedlingData GenerateSeedlingGene(CornFieldRank level)
     {
-        // return (DateTime.Now, Random.Range(minPeriod, maxPeriod + 1));
-        return new SeedlingData(DateTime.Now.AddSeconds(-Random.Range(0, 15)), 15 + Random.Range(0, 15), level);
+        return new SeedlingData(DateTime.Now, Random.Range(minPeriod, maxPeriod + 1), level);
     }
 
     private int GetHarvestCount(CornFieldRank rank)