Minecraft wiki entry for Chorus_plant, associated text: Chorus plants consist of chorus plant blocks and chorus flowers. A chorus flower generates at the top of each branch. A branch stops growing when chorus flower on branch reached age 5, but chorus flower can be harvested and replanted to reset the age, or player can reset chorus flower age by using debug stick. plant heights range between 5 and 22 blocks, although most stop growing before they reach 16 blocks tall.