Xeriscape Landscaping Plants For The Arizona Desert Environment
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Shrubs

Shrubby Senna, Senna wislizenii

Shrubby Senna, Senna wislizenii, Flowers October 11, 2006. Boyce Thompson Arboretum.

Shrubby Senna Seed Pods Senna wislizenii	Shrubby Senna Leaves Senna wislizenii

Shrubby Senna Senna wislizenii, Legume or Pea Family ( Leguminosae ), Shrubby Senna. Also called; Canyon Senna, Dwarf Senna, Wislizenus Senna, Wislizeni Senna, Palo Prieto, Pinacate. Shrubby senna (S. wislizenii) is a native of southern Arizona, ranging from the low deserts in Mexico to 3,000- to 5,000-foot elevations on gravelly slopes. It has pinnately compound leaves and crowded panicles of large, showy bright yellow flowers which contrast nicely with its small leaflets and dark branches. This very ornamental and tough Chihuahan native is late to leaf out in the spring. Shrubby senna has numerous spreading thorny branches which will require some pruning to shape its somewhat rangy habit. It is labeled as either Senna wislizenii or Cassia wislizenii in the nurseries. Height: Up To About 24" Tall. Flowers: Yellow, 5 large yellow petals about 1 inch long, with red - brown veins, 10 stamens with large orange anthers. Blooming Time: March - October. Fruit: Slightly curved dark redish brown pods, 4 to 5 inches long, and 1/8 inch wide. Leaves: Dull green pinnately compound leaves with 3 pairs of elliptical leaflets. Found: Found native in West Texas, New Mexico, Arizona, and Mexico. Elevation: 800 - 5,000 Feet. Habitat: Cities along roadsides and waste places; also on rocky slopes, mesas, sandy river bottoms, and washes in the deserts, and desert grassland ranges. Miscellaneous: Flowering Photos Taken October 11, 2006. Boyce Thompson Arboretum.