--- a/net/minecraft/server/BlockBambooSapling.java
+++ b/net/minecraft/server/BlockBambooSapling.java
@@ -74,6 +74,6 @@
     }
 
     protected void a(World world, BlockPosition blockposition) {
-        world.setTypeAndData(blockposition.up(), (IBlockData) Blocks.BAMBOO.getBlockData().set(BlockBamboo.e, BlockPropertyBambooSize.SMALL), 3);
+        org.bukkit.craftbukkit.event.CraftEventFactory.handleBlockSpreadEvent(world, blockposition, blockposition.up(), (IBlockData) Blocks.BAMBOO.getBlockData().set(BlockBamboo.e, BlockPropertyBambooSize.SMALL), 3); // CraftBukkit - BlockSpreadEvent
     }
 }