Agave deserti (desert agave, mescal, century plant or maguey) is an agave native to desert regions in southern California, Arizona, and Baja California. Its tall yellow flower stalks dot dry rocky slopes and washes throughout the spring.
It forms a rosette of fleshy gray-green leaves 20–70 cm long and 4.5–10 cm broad, with sharp spines along the edges and at the tips. It flowers at maturity (20 to 40 years), sending up an inflorescence 2–6 m tall. The panicle bears numerous yellow, funnel-shaped flowers 3–6 cm long.
There are two varieties:Agave deserti var. deserti. Plants usually with numerous rosettes; perianth tube 3–5 mm. Southern California only. Agave deserti var. simplex (Gentry) W.C.Hodgson & Reveal. Plants usually with one or only a few rosettes; perianth tube 5–10 mm. Southern California and Arizona.