Cloves are the aromatic flower buds of a tree. They are native to the Maluku Islands in Indonesia, and are commonly used as a spice. The clove tree is an evergreen that grows up to 8–12 m tall, with large leaves and crimson flowers grouped in terminal clusters. The flower buds initially have a pale hue, gradually turn green, then transition to a bright red when ready for harvest. Cloves are harvested at 1.5–2.0 cm long.