--- ../src-base/minecraft/net/minecraft/block/BlockSapling.java
+++ ../src-work/minecraft/net/minecraft/block/BlockSapling.java
@@ -22,10 +22,18 @@
 import net.minecraft.world.gen.feature.WorldGenTrees;
 import net.minecraft.world.gen.feature.WorldGenerator;
 
+// CraftBukkit start
+import org.bukkit.Location;
+import org.bukkit.TreeType;
+import org.bukkit.block.BlockState;
+import org.bukkit.event.world.StructureGrowEvent;
+// CraftBukkit end
+
 public class BlockSapling extends BlockBush implements IGrowable
 {
     public static final String[] field_149882_a = new String[] {"oak", "spruce", "birch", "jungle", "acacia", "roofed_oak"};
     private static final IIcon[] field_149881_b = new IIcon[field_149882_a.length];
+    public static TreeType treeType; // CraftBukkit
     private static final String __OBFID = "CL_00000305";
 
     protected BlockSapling()
@@ -41,9 +49,39 @@
         {
             super.updateTick(p_149674_1_, p_149674_2_, p_149674_3_, p_149674_4_, p_149674_5_);
 
-            if (p_149674_1_.getBlockLightValue(p_149674_2_, p_149674_3_ + 1, p_149674_4_) >= 9 && p_149674_5_.nextInt(7) == 0)
+            if (p_149674_1_.getBlockLightValue(p_149674_2_, p_149674_3_ + 1, p_149674_4_) >= 9 && (p_149674_5_.nextInt(Math.max(2, (int)((p_149674_1_.growthOdds / p_149674_1_.getSpigotConfig().saplingModifier * 7) + 0.5F))) == 0))    // Spigot // Cauldron
             {
+                // Cauldron start
+                p_149674_1_.captureTreeGeneration = true;
                 this.func_149879_c(p_149674_1_, p_149674_2_, p_149674_3_, p_149674_4_, p_149674_5_);
+                p_149674_1_.captureTreeGeneration = false;
+                if (p_149674_1_.capturedBlockSnapshots.size() > 0)
+                {
+                    TreeType treeType = BlockSapling.treeType;
+                    BlockSapling.treeType = null;
+                    Location location = new Location(p_149674_1_.getWorld(), p_149674_2_, p_149674_3_, p_149674_4_);
+                    List<net.minecraftforge.common.util.BlockSnapshot> blocks = (List) p_149674_1_.capturedBlockSnapshots.clone();
+                    List<BlockState> blockstates = new java.util.ArrayList();
+                    for (net.minecraftforge.common.util.BlockSnapshot snapshot : blocks)
+                    {
+                        blockstates.add(new org.bukkit.craftbukkit.block.CraftBlockState(snapshot));
+                    }
+                    p_149674_1_.capturedBlockSnapshots.clear();
+                    StructureGrowEvent event = null;
+                    if (treeType != null)
+                    {
+                        event = new StructureGrowEvent(location, treeType, false, null, blockstates);
+                        org.bukkit.Bukkit.getPluginManager().callEvent(event);
+                    }
+                    if (event == null || !event.isCancelled())
+                    {
+                        for (BlockState blockstate : blockstates)
+                        {
+                            blockstate.update(true);
+                        }
+                    }
+                }
+                // Cauldron end
             }
         }
     }
@@ -73,7 +111,20 @@
     {
         if (!net.minecraftforge.event.terraingen.TerrainGen.saplingGrowTree(p_149878_1_, p_149878_5_, p_149878_2_, p_149878_3_, p_149878_4_)) return;
         int l = p_149878_1_.getBlockMetadata(p_149878_2_, p_149878_3_, p_149878_4_) & 7;
-        Object object = p_149878_5_.nextInt(10) == 0 ? new WorldGenBigTree(true) : new WorldGenTrees(true);
+        // CraftBukkit start
+        Object object = null;
+        if (p_149878_5_.nextInt(10) == 0)
+        { 
+            treeType = TreeType.BIG_TREE; // CraftBukkit
+            object = new WorldGenBigTree(true);
+        }
+        else
+        {
+            treeType = TreeType.TREE; // CraftBukkit
+            object = new WorldGenTrees(true);
+        }
+        // CraftBukkit end
+
         int i1 = 0;
         int j1 = 0;
         boolean flag = false;
@@ -84,6 +135,7 @@
             default:
                 break;
             case 1:
+                treeType = TreeType.REDWOOD; // CraftBukkit
                 label78:
 
                 for (i1 = 0; i1 >= -1; --i1)
@@ -108,6 +160,7 @@
 
                 break;
             case 2:
+                treeType = TreeType.BIRCH; // CraftBukkit
                 object = new WorldGenForest(true, false);
                 break;
             case 3:
@@ -119,6 +172,7 @@
                     {
                         if (this.func_149880_a(p_149878_1_, p_149878_2_ + i1, p_149878_3_, p_149878_4_ + j1, 3) && this.func_149880_a(p_149878_1_, p_149878_2_ + i1 + 1, p_149878_3_, p_149878_4_ + j1, 3) && this.func_149880_a(p_149878_1_, p_149878_2_ + i1, p_149878_3_, p_149878_4_ + j1 + 1, 3) && this.func_149880_a(p_149878_1_, p_149878_2_ + i1 + 1, p_149878_3_, p_149878_4_ + j1 + 1, 3))
                         {
+                            treeType = TreeType.JUNGLE; // CraftBukkit
                             object = new WorldGenMegaJungle(true, 10, 20, 3, 3);
                             flag = true;
                             break label93;
@@ -130,11 +184,13 @@
                 {
                     j1 = 0;
                     i1 = 0;
+                    treeType = TreeType.SMALL_JUNGLE; // CraftBukkit
                     object = new WorldGenTrees(true, 4 + p_149878_5_.nextInt(7), 3, 3, false);
                 }
 
                 break;
             case 4:
+                treeType = TreeType.ACACIA; // CraftBukkit
                 object = new WorldGenSavannaTree(true);
                 break;
             case 5:
@@ -147,6 +203,7 @@
                         if (this.func_149880_a(p_149878_1_, p_149878_2_ + i1, p_149878_3_, p_149878_4_ + j1, 5) && this.func_149880_a(p_149878_1_, p_149878_2_ + i1 + 1, p_149878_3_, p_149878_4_ + j1, 5) && this.func_149880_a(p_149878_1_, p_149878_2_ + i1, p_149878_3_, p_149878_4_ + j1 + 1, 5) && this.func_149880_a(p_149878_1_, p_149878_2_ + i1 + 1, p_149878_3_, p_149878_4_ + j1 + 1, 5))
                         {
                             object = new WorldGenCanopyTree(true);
+                            treeType = TreeType.DARK_OAK; // CraftBukkit
                             flag = true;
                             break label108;
                         }
