diff --git a/src/world/generator/NormalGenerator.php b/src/world/generator/NormalGenerator.php
index df447767d..a0cd73e6b 100644
--- a/src/world/generator/NormalGenerator.php
+++ b/src/world/generator/NormalGenerator.php
@@ -65,6 +65,10 @@ class NormalGenerator implements LevelGenerator{
 			new OreType(new GravelBlock(), 10, 16, 0, 128),
 		));
 		$this->populators[] = $ores;
+		$tallGrass = new TallGrassPopulator();
+		$tallGrass->setBaseAmount(5);
+		$tallGrass->setRandomAmount(1);
+		$this->populators[] = $tallGrass;
 	}
 	
 	public function generateChunk($chunkX, $chunkZ){
@@ -79,6 +83,10 @@ class NormalGenerator implements LevelGenerator{
 				$patches[$i] = $this->noisePatches->noise2D($x + ($chunkX << 4), $z + ($chunkZ << 4), 0.03, 16, true);
 				$patchesSmall[$i] = $this->noisePatchesSmall->noise2D($x + ($chunkX << 4), $z + ($chunkZ << 4), 0.5, 4, true);
 				$base[$i] = $this->noiseBase->noise2D($x + ($chunkX << 4), $z + ($chunkZ << 4), 0.7, 16, true);
+				
+				if($base[$i] < 0){
+					$base[$i] *= 0.5;
+				}
 			}
 		}
 		
diff --git a/src/world/generator/populator/OrePopulator.php b/src/world/generator/populator/OrePopulator.php
index 390cbcba7..5ae016ad9 100644
--- a/src/world/generator/populator/OrePopulator.php
+++ b/src/world/generator/populator/OrePopulator.php
@@ -25,9 +25,9 @@ class OrePopulator extends Populator{
 		foreach($this->oreTypes as $type){
 			$ore = new OreObject($random, $type);
 			for($i = 0; $i < $ore->type->clusterCount; ++$i){
-				$x = $random->nextRange($chunkX << 4, ($chunkX << 4) + 16);
+				$x = $random->nextRange($chunkX << 4, ($chunkX << 4) + 15);
 				$y = $random->nextRange($ore->type->minHeight, $ore->type->maxHeight);
-				$z = $random->nextRange($chunkZ << 4, ($chunkZ << 4) + 16);
+				$z = $random->nextRange($chunkZ << 4, ($chunkZ << 4) + 15);
 				if($ore->canPlaceObject($level, $x, $y, $z)){
 					$ore->placeObject($level, new Vector3($x, $y, $z));
 				}
diff --git a/src/world/generator/populator/TallGrassPopulator.php b/src/world/generator/populator/TallGrassPopulator.php
new file mode 100644
index 000000000..ba37bf59d
--- /dev/null
+++ b/src/world/generator/populator/TallGrassPopulator.php
@@ -0,0 +1,70 @@
+<?php
+
+/**
+ *
+ *  ____            _        _   __  __ _                  __  __ ____  
+ * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \ 
+ * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
+ * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/ 
+ * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_| 
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * @author PocketMine Team
+ * @link http://www.pocketmine.net/
+ * 
+ *
+*/
+
+class TallGrassPopulator extends Populator{
+	private $level;
+	private $randomAmount;
+	private $baseAmount;
+	
+	public function setRandomAmount($amount){
+		$this->randomAmount = $amount;
+	}
+	
+	public function setBaseAmount($amount){
+		$this->baseAmount = $amount;
+	}
+	
+	public function populate(Level $level, $chunkX, $chunkZ, Random $random){
+		$this->level = $level;
+		$amount = $random->nextRange(0, $this->randomAmount + 1) + $this->baseAmount;
+		for($i = 0; $i < $amount; ++$i){
+			$x = $random->nextRange($chunkX << 4, ($chunkX << 4) + 15);
+			$z = $random->nextRange($chunkZ << 4, ($chunkZ << 4) + 15);
+			for($size = 30; $size > 0; --$size){
+				$xx = $x - 7 + $random->nextRange(0, 15);
+				$zz = $z - 7 + $random->nextRange(0, 15);
+				$yy = $this->getHighestWorkableBlock($xx, $zz);
+				$vector = new Vector3($xx, $yy, $zz);
+				if($yy !== -1 and $this->canTallGrassStay($this->level->getBlockRaw($vector))){
+					$this->level->setBlockRaw($vector, new TallGrassBlock(1));
+				}
+			}
+		}
+	}
+	
+	private function canTallGrassStay(Block $block){
+		return $block->getID() === AIR and $block->getSide(0)->getID() === GRASS;
+	}
+	
+	private function getHighestWorkableBlock($x, $z){
+		for($y = 128; $y > 0; --$y){
+			$b = $this->level->getBlockRaw(new Vector3($x, $y, $z));
+			if($b->getID() === AIR or $b->getID() === LEAVES){
+				if(--$y <= 0){
+					return -1;
+				}				
+			}else{
+				break;
+			}
+		}
+		return ++$y;
+	}
+}
\ No newline at end of file