ON THIS WIKI
The Willow Sapling is a tree sapling from the Natura mod. The Willow Sapling grows into the Willow Tree, which can be harvested for Willow Wood and Willow Leaves. Willow Leaves occasionally drop more saplings. They can be found naturally spawned in biomes nearby to Swampland biomes, as well as inside of the Swamplands.
Bone Meal can be used to speed up the growth of the sapling. It takes 1–4 uses of bone meal to grow a tree. If there is not enough space, the sapling will not grow.