Celery, Apium graveolens, is an aromatic biennial plant in the family Apicaceae grown primarily for its stalk and taproot which are used as vegetables. The rhombic leaves of the celery plant grow in a rosette and are 3–6 cm (1.2–2.4 in) long and 2–4 cm (0.8–1.6 in) broad on a branched central stem which is highly ribbed.