diff --git a/src/pocketmine/level/BlockWriteBatch.php b/src/pocketmine/level/BlockWriteBatch.php
index 8638930fd..11faaa2bc 100644
--- a/src/pocketmine/level/BlockWriteBatch.php
+++ b/src/pocketmine/level/BlockWriteBatch.php
@@ -67,6 +67,33 @@ class BlockWriteBatch{
 		return $this;
 	}
 
+	/**
+	 * Reads a block from the given world, masked by the blocks in this writebatch. This can be useful if you want to
+	 * add blocks to the batch that depend on previous blocks should they exist.
+	 *
+	 * @param ChunkManager $world
+	 * @param Vector3      $pos
+	 *
+	 * @return Block
+	 */
+	public function fetchBlock(ChunkManager $world, Vector3 $pos) : Block{
+		return $this->fetchBlockAt($world, $pos->getFloorX(), $pos->getFloorY(), $pos->getFloorZ());
+	}
+
+	/**
+	 * @see BlockWriteBatch::fetchBlock()
+	 *
+	 * @param ChunkManager $world
+	 * @param int          $x
+	 * @param int          $y
+	 * @param int          $z
+	 *
+	 * @return Block
+	 */
+	public function fetchBlockAt(ChunkManager $world, int $x, int $y, int $z) : Block{
+		return $this->blocks[$x][$y][$z] ?? $world->getBlockAt($x, $y, $z);
+	}
+
 	/**
 	 * Validates and attempts to apply the batch to the given world. If any part of the batch fails to validate, no
 	 * changes will be made to the world.
diff --git a/src/pocketmine/level/generator/object/Tree.php b/src/pocketmine/level/generator/object/Tree.php
index aa6993017..7a795e20a 100644
--- a/src/pocketmine/level/generator/object/Tree.php
+++ b/src/pocketmine/level/generator/object/Tree.php
@@ -117,7 +117,7 @@ abstract class Tree{
 		$write->addBlockAt($x, $y - 1, $z, BlockFactory::get(Block::DIRT));
 
 		for($yy = 0; $yy < $trunkHeight; ++$yy){
-			if($this->canOverride($level->getBlockAt($x, $y + $yy, $z))){
+			if($this->canOverride($write->fetchBlockAt($level, $x, $y + $yy, $z))){
 				$write->addBlockAt($x, $y + $yy, $z, $this->trunkBlock);
 			}
 		}
@@ -134,7 +134,7 @@ abstract class Tree{
 					if($xOff === $mid and $zOff === $mid and ($yOff === 0 or $random->nextBoundedInt(2) === 0)){
 						continue;
 					}
-					if(!$level->getBlockAt($xx, $yy, $zz)->isSolid()){
+					if(!$write->fetchBlockAt($level, $xx, $yy, $zz)->isSolid()){
 						$write->addBlockAt($xx, $yy, $zz, $this->leafBlock);
 					}
 				}