Description (From Recipaedia)
Saplings are used to plant trees. You can obtain them by crafting from the leaves of trees. When planting, be careful to place the saplings in a well lit place, full of moisture and of correct temperature. Use hygrometer and thermometer to measure these quantities. Oaks like it warm, Birches moderately cool and Spruces cold. All trees need a lot of humidity. If you plant a sapling in a wrong spot, it will wilt into a dry brush.
To obtain Birch Saplings, put Birch Leaves in the Crafting Table. Each leaf yields one sapling.
Saplings are used to grow trees. Saplings must be kept in a well lit area on dirt blocks. Birch Saplings need to be planted in warm, semi-humid climates.
- Saplings, if successfully grown, will consume a block of dirt under it and replace it will a "root", an extra piece of wood. (Thanks to Stanimus for pointing this out)
- Saplings provide half the fuel value of leaves (.5 fuel compared to leaves' fuel value of 1), so it is wise to use leaves for fuel instead of saplings.