Oak

An oak is the most common tree in the game, available in several variants. It has the smallest initial space requirement for growth, and along with dark oak trees, it can drop an apple when a leaf block is destroyed. As with birch trees, an oak near flowers can generate with a bee nest attached.

Variants
Oaks come in several variants with different properties:
 * 1) Small regular oaks are the most common. The leaves are arranged the same as the birch leaf arrangement.
 * 2) Large or "fancy" trees are less common and have a distinct look and different growth requirements. They often have branches, outgrowths of logs on the sides of the trunk, or even freestanding and surrounded by leaves. The sapling requires 4–14 blocks of open space directly above to grow (air or leaves only) but can otherwise be completely enclosed on all sides.
 * 3) * A fancy tree form exists with a single leaf block layer above the minimal 4-block trunk, rarely allowing a tree to grow in a vertical space with a height of only 5, but otherwise the maximum trunk height is 2 less than the vertical space, making the practical minimum height 6.
 * 4) * A tree can be forced into a fancy configuration if a "brace" of non-solid blocks (e.g. glass or slabs) is placed around where the trunk would be, one block off the ground.
 * 5) * A rare variant is colloquially known as a "balloon" oak. This is a fancy oak generated with the smallest size possible. It consists of a tall trunk and leaves that form a spherical shape, similar to a balloon. These oaks can grow around an obstructing block. They usually contain 4 blocks of logs, but some may contain more.
 * 6) In swamp biomes, naturally occurring oaks tend to grow in the water. Unlike trees in other biomes, which typically have a slightly conical or pointed canopy, all swamp oaks have round, flat-topped canopies. Also unlike other oaks, these have a broad range of foliage. They tend to be covered in vines that trail down to the ground. Plains Meeting Point 3.png
 * 7) An oak tree with a unique arrangement of leaves is generated at meeting point 3, in plains villages. This leaf arrangement is not found elsewhere naturally, and it cannot be grown from a sapling.

Generation
The oak tree variants spawn naturally in the indicated biomes:

Blocks and items
These items can be obtained from all variants of oak:
 * (chance of dropping when breaking leaves)
 * (if spawned on an oak near flowers)
 * (if present on a fallen oak log)
 * (harvested with shears)
 * (harvested with any tool including hands)
 * (created from a log in the inventory crafting grid)
 * (chance of dropping when breaking leaves)
 * (created by an axe on a log)
 * (harvested with shears from a swamp tree, or from a dying tree)

Breeding
Oak tree saplings can be planted on:

An oak tree requires a 1×1 column of unobstructed space at least 4 blocks above the sapling to grow (5 blocks including the sapling itself). Oak trees can still grow when the base and trunk are enclosed on all sides. Their growth is not hindered by logs, leaves, dirt, and saplings.

An oak tree grown from a sapling within 2 blocks of a flower has a 5% chance of having a bee nest containing 2 bees.

Other variant oaks
$$, trees can generate as one of the two following variants of the normal tree. Both of these generate naturally, and can be grown out of normal saplings.



Dying oak
A dying oak has the standard growth pattern of any other tree, however, all exposed logs in the main trunk are covered with vines. They can generate as regular or small oak trees.

Fallen oak log
These trees consist of a single upright log, or stump. Logs lying on their side are often found 1–2 blocks from the stump. They occasionally have mushrooms on top.

A fallen oak has a log length of 4–7 blocks, and the stump is 75% covered with vines.

Trivia

 * In real life, oak is a genus of tree known as Quercus.