Soaptree yuccas (Yucca elata), standing to about 20-feet tall, are a signature species of the desert grasslands in southern Arizona and southern New Mexico. In northern Arizona, southern Utah, and southeastern Nevada,soaptree yucca grows to about 10-feet tall including the flower stalk.
Soaptree Yucca generally are uncommon components of the Upper Sonoran (Mojave Desert Scrub) life zone in the Grand Canyon region.
Family: Agave (Agavaceae).
Other Names: Whipple Yucca, Utah Yucca.
Plant Form: Upright yucca with narrow leaves.
Height: Including the flower stalk, to about 30 feet in southern areas. To about 10 feet in northern areas.
Trunk: Generally 6-8 inches diameter, to about 6 feet; covered with dead leaves; sometimes branched.