diff --git a/src/block/TallGrass.php b/src/block/TallGrass.php
index 459751c4e..b56169dc8 100644
--- a/src/block/TallGrass.php
+++ b/src/block/TallGrass.php
@@ -25,14 +25,53 @@ namespace pocketmine\block;
 
 use pocketmine\block\utils\StaticSupportTrait;
 use pocketmine\block\utils\TallGrassTrait;
+use pocketmine\item\Fertilizer;
+use pocketmine\item\Item;
 use pocketmine\math\Facing;
+use pocketmine\math\Vector3;
+use pocketmine\player\Player;
 
 class TallGrass extends Flowable{
 	use TallGrassTrait;
 	use StaticSupportTrait;
 
+	/** @phpstan-var \Closure() : DoublePlant|null */
+	private ?\Closure $doublePlantVariant;
+
+	/**
+	 * @phpstan-param \Closure() : DoublePlant|null $doublePlantVariant
+	 */
+	public function __construct(BlockIdentifier $idInfo, string $name, BlockTypeInfo $typeInfo, ?\Closure $doublePlantVariant = null){
+		parent::__construct($idInfo, $name, $typeInfo);
+		$this->doublePlantVariant = $doublePlantVariant;
+	}
+
 	private function canBeSupportedAt(Block $block) : bool{
 		$supportBlock = $block->getSide(Facing::DOWN);
 		return $supportBlock->hasTypeTag(BlockTypeTags::DIRT) || $supportBlock->hasTypeTag(BlockTypeTags::MUD);
 	}
+
+	public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null, array &$returnedItems = []) : bool{
+		$world = $this->position->getWorld();
+		$upPos = $this->position->getSide(Facing::UP);
+		if(!$world->isInWorld($upPos->getFloorX(), $upPos->getFloorY(), $upPos->getFloorZ()) || $this->getSide(Facing::UP)->getTypeId() !== BlockTypeIds::AIR){
+			return false;
+		}
+
+		if($item instanceof Fertilizer && ($doubleVariant = $this->getDoublePlantVariant()) !== null){
+			$bottom = (clone $doubleVariant)->setTop(false);
+			$top = (clone $doubleVariant)->setTop(true);
+			$world->setBlock($this->position, $bottom);
+			$world->setBlock($this->position->getSide(Facing::UP), $top);
+			$item->pop();
+
+			return true;
+		}
+
+		return false;
+	}
+
+	private function getDoublePlantVariant() : ?DoublePlant{
+		return $this->doublePlantVariant !== null ? ($this->doublePlantVariant)() : null;
+	}
 }
diff --git a/src/block/VanillaBlocks.php b/src/block/VanillaBlocks.php
index fe3bbc254..026729c5c 100644
--- a/src/block/VanillaBlocks.php
+++ b/src/block/VanillaBlocks.php
@@ -1230,8 +1230,8 @@ final class VanillaBlocks{
 		self::register("sugarcane", fn(BID $id) => new Sugarcane($id, "Sugarcane", new Info(BreakInfo::instant())));
 		self::register("sweet_berry_bush", fn(BID $id) => new SweetBerryBush($id, "Sweet Berry Bush", new Info(BreakInfo::instant())));
 		self::register("tnt", fn(BID $id) => new TNT($id, "TNT", new Info(BreakInfo::instant())));
-		self::register("fern", fn(BID $id) => new TallGrass($id, "Fern", new Info(BreakInfo::instant(ToolType::SHEARS, 1), [Tags::POTTABLE_PLANTS])));
-		self::register("tall_grass", fn(BID $id) => new TallGrass($id, "Tall Grass", new Info(BreakInfo::instant(ToolType::SHEARS, 1))));
+		self::register("fern", fn(BID $id) => new TallGrass($id, "Fern", new Info(BreakInfo::instant(ToolType::SHEARS, 1), [Tags::POTTABLE_PLANTS]), fn() => VanillaBlocks::LARGE_FERN()));
+		self::register("tall_grass", fn(BID $id) => new TallGrass($id, "Tall Grass", new Info(BreakInfo::instant(ToolType::SHEARS, 1)), fn() => VanillaBlocks::DOUBLE_TALLGRASS()));
 
 		self::register("blue_torch", fn(BID $id) => new Torch($id, "Blue Torch", new Info(BreakInfo::instant())));
 		self::register("copper_torch", fn(BID $id) => new Torch($id, "Copper Torch", new Info(BreakInfo::instant())));