Definition of crown bud in English:

crown bud

noun

Horticulture
  • 1A bud on the crown of a root or tuber.

  • 2A main, upper, or apical bud on a stem or branch; especially the first flower bud to form on a chrysanthemum plant (more fully "first crown bud") or, if the first is removed, the second such bud (more fully "second crown bud").

Origin

Mid 18th century; earliest use found in Practical Husbandman & Planter.