Slimy Sapling
From Feed The Beast Wiki
The Slimy Sapling is an item that drops from the leaves of Slimy Trees.
Growth[edit]
Slimy saplings can be grown on dirt, Grass, Slimy_Mud_(Blue), Slimy_Mud_(Green), and any grass that normal saplings can be grown on. While bone meal does not work in survival mode, it does work in creative.