CACTUS!!!

PlayerListener.java

@EventHandler
public void onBlockBreak(BlockBreakEvent event) {
	Block block = event.getBlock();
	byte data = block.getData();
	Block blocks = block.getRelative(0, 1, 0);
	
	while (block.getType().equals(blocks.getType()) && data == blocks.getData()) {
		if (event.getPlayer().getGameMode().equals(GameMode.CREATIVE)) {
			blocks.setType(Material.AIR);
		} else {
			blocks.breakNaturally();
		}
		blocks = blocks.getRelative(0, 1, 0);
		data = blocks.getData();
	}
}