Chorus Flower

Chorus flowers are plants that are found in the End. They grow on chorus plants.

Breaking
Chorus flowers can be mined with any tool and drop themselves when broken. They do not drop anything when pushed by a piston or water, or when their supporting block (the chorus plant block) is destroyed, since the chorus flowers grows on top of chorus trees. They also drop when shot by a trident or arrow.

Natural generation
Chorus flowers are naturally generated in the End at the top of chorus trees, in their fully-grown state.

Usage
Chorus flowers are used to grow chorus plants. They can be planted on end stone in any dimension.

Farming
Chorus flowers can be planted on end stone and grow in any dimension, regardless of light level. A flower stops growing once it has reached age 5 (appearing purple rather than white), but may be harvested and replanted to reset the age. Chorus flowers do not grow if planted 1 block below the surface of the ground.

Placement and growth


Chorus flowers must be above end stone or chorus plant, or be above air and horizontally adjacent to exactly one chorus plant. If these conditions are not met, the block breaks without dropping anything.
 * Placement

Each block tick until the flower reaches age 5, the flower attempts to grow if the block above is air. The flower does not age if growth is not attempted due to lack of an air block above.
 * Growth conditions and algorithm

The flower may attempt to grow upwards depending on the structure of chorus plant blocks directly beneath: The growth attempt succeeds if the blocks horizontally adjacent to and above the target block above are all air, and results in the target block becoming a flower block with the same age while the existing flower block turns to chorus plant.
 * 100% chance if zero or one plant block is directly beneath
 * 60% if the flower is above a two-block unbranched plant (i.e. two plant blocks over end stone)
 * 50% if above a two-block high branch (i.e. two plant blocks over air)
 * 40% if above a three-block unbranched plant
 * 25% if above a three-block high branch
 * 20% if above a four-block unbranched plant

If upwards growth does not occur and the flower's age is less than 4, the flower may attempt to branch horizontally. 1–4 branches are attempted on an unbranched plant or 0–3 on a branched plant. For each branch a horizontal direction is chosen at random, and if the block in that direction is an air block with more air blocks on all other horizontal sides and an air block below, it is replaced with a flower with age incremented by 1. If at least one branch succeeds, the original flower block is turned to chorus plant.

Upon a successful growth attempt, the chorus flower emits a low-pitched sound, similar to the sound endermen emit when teleporting.

If no growth occurs on a growth attempt, the flower's age is set to 5.


 * Flowers and plant height

The amount of chorus flowers a player gets from a fully and unrestricted grown chorus plant ranges from 1 to 8, averaging at around 3.7 flowers per plant.

Plant heights range from 5 to (very rarely) 22 above the end stone block on which the original chorus flower was planted, with over half falling in the range 13–16. Flower heights range from 3 to (very rarely) 22, with over half falling in the range 11–16 above the end stone block.

ID




Trivia

 * Bone meal cannot force chorus flowers to grow.
 * The smallest possible fully-grown chorus tree (assuming the growth is not disturbed) would have only 5 chorus plant blocks, and the tree (including the flower) would be 5 blocks high. The largest possible tree would be 22 blocks high.
 * When flowers reach age five, breaking them and replanting them on the same chorus plant block (even on a different face) can allow the plant to grow further.