diff --git a/src/main/java/gregtechfoodoption/GTFOEventHandler.java b/src/main/java/gregtechfoodoption/GTFOEventHandler.java
index 8b46e090..1b0e28ed 100644
--- a/src/main/java/gregtechfoodoption/GTFOEventHandler.java
+++ b/src/main/java/gregtechfoodoption/GTFOEventHandler.java
@@ -252,7 +252,7 @@ public static void onDrinkPotion(PotionEvent.PotionAddedEvent event) {
     public static void handleBerryGrowth(BlockEvent.CropGrowEvent.Post event) {
         if (event.getState().getBlock() instanceof GTFOBerryBush bush) {
             event.getWorld().setBlockState(event.getPos(),
-                    bush.withEfficiency(event.getState(), bush.getEfficiency(event.getWorld(), event.getPos(), event.getState())),
+                    bush.withEfficiency(event.getState(), bush.calcEfficiency(event.getWorld(), event.getPos())),
                     2);
         }
     }
diff --git a/src/main/java/gregtechfoodoption/block/GTFOBerryBush.java b/src/main/java/gregtechfoodoption/block/GTFOBerryBush.java
index 7f1db3f5..406583c2 100644
--- a/src/main/java/gregtechfoodoption/block/GTFOBerryBush.java
+++ b/src/main/java/gregtechfoodoption/block/GTFOBerryBush.java
@@ -81,10 +81,10 @@ public void grow(World worldIn, BlockPos pos, IBlockState state) {
             i = j;
         }
 
-        worldIn.setBlockState(pos, withEfficiency(this.withAge(i), getEfficiency(worldIn, pos, state)), 3);
+        worldIn.setBlockState(pos, withEfficiency(this.withAge(i), calcEfficiency(worldIn, pos)), 3);
     }
 
-    public int getEfficiency(World worldIn, BlockPos pos, IBlockState state) {
+    public int calcEfficiency(World worldIn, BlockPos pos) {
         int[] efficiencies = new int[EFFICIENCY_GTFO.getAllowedValues().stream().max(Integer::compare).get() + 1];
         BlockPos.getAllInBox(pos.east().north(), pos.west().south()).forEach((blockpos) -> {
             if (!blockpos.equals(pos))
@@ -186,4 +186,14 @@ public IBlockState getStateFromMeta(int meta) {
     public int getMetaFromState(IBlockState state) {
         return this.getEfficiency(state) * 3 + this.getAge(state);
     }
+
+    @Override
+    public void neighborChanged(IBlockState state, World worldIn, BlockPos pos, Block blockIn, BlockPos fromPos) {
+        if (!(worldIn.getBlockState(fromPos).getBlock() instanceof GTFOBerryBush)) {
+            // We don't want crops transmuting to higher efficiencies.
+            int newEfficiency = Math.min(calcEfficiency(worldIn, pos), getEfficiency(state));
+            worldIn.setBlockState(pos, state.withProperty(EFFICIENCY_GTFO, newEfficiency), 3);
+        }
+        super.neighborChanged(state, worldIn, pos, blockIn, fromPos);
+    }
 }
diff --git a/src/main/java/gregtechfoodoption/item/GTFOBerrySeedBehaviour.java b/src/main/java/gregtechfoodoption/item/GTFOBerrySeedBehaviour.java
index a6fb08b1..3ee2d9b2 100644
--- a/src/main/java/gregtechfoodoption/item/GTFOBerrySeedBehaviour.java
+++ b/src/main/java/gregtechfoodoption/item/GTFOBerrySeedBehaviour.java
@@ -43,7 +43,7 @@ public ActionResult<ItemStack> onItemUse(EntityPlayer player, World world, Block
     private boolean isBlocked(World world, BlockPos pos, EntityPlayer player) {
         AtomicBoolean areAnyBlocked = new AtomicBoolean(false);
         BlockPos.getAllInBox(pos.up().east().north(), pos.up().west().south()).forEach((crop) -> {
-            if (world.getBlockState(crop).getBlock() instanceof GTFOBerryBush) {
+            if (crop.equals(pos.up()) || world.getBlockState(crop).getBlock() instanceof GTFOBerryBush) {
                 AtomicBoolean isBlocked = new AtomicBoolean(true);
                 BlockPos.getAllInBox(crop.east().north(), crop.west().south()).forEach((blockpos) -> {
                     if (!blockpos.equals(pos.up()) && world.getBlockState(blockpos).getBlock().isAir(world.getBlockState(blockpos), world, blockpos)) {