Sapling



Saplings are an important resource that allows trees to be grown to replace those cut down by miners in search of wood, wooden planks or sticks.

In Survival mode, saplings are dropped with a random chance when leaves wither or are destroyed by the player. The withering behaviour of leaves is explained in detail in the leaves article. There are various saplings for each tree type as of Beta 1.5. Most tree canopies will drop at least one sapling block, though they may drop more, and large tree canopies should drop several if completely denuded. When trees grow, it is possible for some leaves to be generated in an unsupported position, and as they wither they may drop saplings, allowing saplings to be found rarely below newly grown trees. It should be noted that saplings will generally not drop from a tree canopy that is consumed by fire, as the saplings are prone to landing on flaming blocks unless the canopy is lit from above.

In Creative mode, saplings function as a decoration block, and can be placed freely. Saplings will grow into a full tree after a few seconds if the server has "grow-trees" set to "true" in the "server.properties" file and if they are on a grass block. They will not grow on a dirt block.

Growth
Saplings can be planted on any dirt or grass block, and will grow into a new tree if they are exposed to a light level of at least 9 in the block above the sapling, and have at least a certain number of empty blocks, depending on sapling type, above the sapling "block" itself. Normal saplings need a 1x6x1 area, birch saplings need a 5x7x5 area, and pine saplings need a 7x10x7 area.

They will pop out of the ground if they are not exposed to a light level of at least 8, but will not pop out of the ground if they do not have enough headroom, provided they still have sufficient light. In this way they can be used as decoration in structures provided they don't have room to grow into full trees, or the block above is never exposed to a light level of 9 or more. This also applies to saplings in The Nether.

A light level of 9 (above sapling) may be provided by a nearby torch, so saplings can grow into trees underground with just one nearby torch. It should be noted that while moonlight has a brightness of 4, saplings will not pop out of the ground when exposed to moonlight - they will survive low light provided there are no blocks directly above them.

If they are right clicked on with Bone Meal, they will grow into a full tree almost instantly, allowing rapid collection of wood. This instant growth may fail, especially when space is restricted. The Bone Meal is consumed regardless of success. The sapling attempts a random tree form (big and branching, for example), but if it does not work due to lack of space, the growth aborts. Repeated application of Bone Meal may result in a successful tree except in extreme lack of space.

As of Beta 1.5, all Saplings can be used in furnaces, having the same duration as sticks.

Trivia

 * Flowing water destroys saplings entirely; the item won't be dropped.
 * If the player stands on the same block as a placed Sapling as it grows into a tree, wood blocks will grow on top of them, causing suffocation.
 * It is possible to plant a sapling anywhere, provided dirt or grass is available.
 * The sapling requires 6 blocks high free in order to grow (either by Bone Meal or time)
 * There are some bugs in which using Bone Meal on a sapling in a confined space will only produce leaves.
 * Saplings can grow without light if bone meal is used, provided that there is enough space above the sapling.
 * Since Beta 1.3_01, saplings drop faster from leaves.
 * Since Beta 1.5, birch, spruce/pine, and oak trees drop birch, spruce/pine, and oak saplings, respectively, although birch and spruce/pine trees will still drop oak saplings as well. Pre-Beta 1.5, trees only ever dropped oak saplings, regardless of tree type.
 * Since Beta 1.5, it seems that birch saplings grow faster than normal trees. A birch tree has been seen to grow from planted sapling to a fully grown tree in under 1 day.
 * When the Beta 1.5 update occurred, all planted saplings were randomly turned into a birch or spruce/pine sapling.
 * When a sapling is placed one block below the sky void, but with the conditions to grow present, it will simply turn into one wood block. It will also grow trees with flat leaf surfaces if placed slightly below the sky void.
 * Before 1.5 if bone meal was used on an oak sapling it had a slight chance of growing into a birch or spruce/pine tree.