Mystery Seedling is a tree seedling in FarmVille. Mystery Seedling will grow into a fully grown tree (usually a level 2 tree) if it is watered. Eight Watering Cans are required to grow a Mystery Seedling into a tree. The physical appearance of the seedling changes with each Watering Can, increasing slowly in size with each can added. After the player has used four Watering Cans on a seedling, the game will say that it has grown into a Budding Tree Sapling and allow the player to share Watering Cans with friends.