The bloody sapling features in the Evil Bloodweed Tree: Feed event during Wilderness Flash Events.
Players must nurture it with ground bones obtained by grinding the bones taken from the nearby skeletons. A number of ground bones must be contributed both personally and collectively to succeed in the event. Both requirements scale according to the number of players participating in the event. After five minutes the event ends, and the tree grows into an evil bloodwood tree, proceeding the event to the Evil Bloodweed Tree: Chop phase and giving the players who contributed enough a sack of wild rewards and Farmingexperience depending on the player's Farming level, or ends if the players were unsuccessful.