Acacia aneura (Mulga). Tolerates reflected heat, Hardy to 15°F. Evergreen shrub or small tree, grows slowly to 15' tall by 10' in spread. Little water once established. Origin: Australia. 1,800 seeds per oz.

Acacia angustissima (Prairie acacia) 2,350 seeds per oz.

Acacia berlandieri (Guajillo). Tolerates heat, frost hardy, evergreen in mild winters. Chihuahuan desert native. Shrub or small tree. Grows to 15' tall and 10' wide. Drought hardy, needs good drainage. Approx. 75 seeds per oz.

Acacia constricta (White thorn acacia) Full sun, hardy to 15°F. Southwestern USA native. Large shrub or small tree, spreading, 8 to 15' tall. Little or no water once established. 1400 seeds per oz.

Acacia decurrens (Green wattle). Sunset: 8-9,14-24 USDA: 9-11. Young trees are frost tender. Full sun. Evergreen tree, fast growing to 30 - 50' tall. Low water, needs good drainage. Origin: Australia (New South Wales, Victoria and Tasmania). Propagation: Seeds (better results with hot water treatment). 32,000 seeds per lb.

Acacia greggii (Cat claw acacia). Tolerates reflected heat. Hardy to 0°F. Southwestern USA native. Deciduous, large shrub or small tree, fast growing from 8 to 20' tall. Drought tolerant, looks better with occasional watering. 270 seeds per oz.

Acacia melanoxylon (Blackwood acacia). Sunset: 8-9,13-24; USDA: 9b-11. Full sun. Fast growing, up to 40' tall and wide, rounded crown; dark green leaves. Drought tolerant, needs good drainage. Origin: Southeastern Australia. 31000 seeds per pound.

Acacia redolens v. prostrata (Low boy). Full sun, sprawling shrub evergreen 2-5' tall; 6-12' wide. Fast growth rate. Small yellow flowers. Woody trunks. Drought, heat tolerant. Hardy to 20°F or lower. Native to Australia. 3500 seeds per oz.

Acacia salicina (Willow acacia). Single or multi-stemmed tree. Grows rapidly from 20-40' tall, 10-20' wide. Leaves form narrow strips. Branches weep. Hardy to 20° F. Australian native. 750 seeds per oz.

Acacia saligna Syn: Acacia cyanophylla (Blue leaf wattle/orange wattle). Single or multi-stemmed tree can be grown as a shrub. Grows to 15 -25' high; 10-20' wide. Semi-evergreen. Hardy to 20° F. Australian native. 1500 seeds per oz.

Acacia smallii (Sweet acacia). Heat tolerant tree. Matures to 15' - 30' tall; 15 - 20' wide. Semi-Deciduous. Fragrant flowers. Rapid growth with regular watering. Hardy to 15° F. 450 seeds per oz.

Acacia stenophylla (Shoestring acacia). Heat tolerant tree. Matures to 20' - 25' tall; 15 - 20' wide. Drought tolerant, little water once established. Weeping branches. Hardy to 20 F. Australian native. 360 seeds per oz.

Acacia willardiana (Palo blanco). Graceful small tree 15 to 20' tall; 10 to 15' wide. Hardy to 23° F. Peeling bark reveals smooth white inner bark. Little water once established. Native to Mexico (Sonora).

Acer glabrum (Rocky mountain maple) Sunset: 1-3, 10. Full sun to part shade. Regular to moderate water.

Acer negundo (California boxelder). Sunset: 1-10,12-24; USDA: 2-10. Full sun to part shade Deciduous tree, 30 - 60' tall, 30 - 50' in spread. Needs regular to moderate water. Can be invasive. 13,300 seeds per pound.

Ambrosia deltoidea (Triangle leaf). Full sun, heat tolerant, desert perennial shrub. Fast growing 2' tall; 3' spread. Little water once established. Native to Sonoran desert. 2400 seeds per oz.

Ambrosia dumosa (White bursage) 2400 seeds per oz.

Amelanchier alnifolia (Saskatoon Serviceberry). Native and introduced perennial shrub. The fruits are used in pies, jams, and syrup, Saskatoon wine is a regional specialty. Native Americans boiled branches to make a tea for treating colds. Height, 3-15 Feet. Requires 12" minimum precipitation. 25,800 seeds per pound.

Amelanchier utahensis (Utah Serviceberry). A small tree or large shrub. Grows to  about 15' at maturity. The flowers have white petals and grow in small clusters. In early spring, while in bloom, the entire plant is snowy white. Seeds are formed in small apple-like pomes that are brown to black when ripe. The fruit are juicy and sweet. Widely scattered throughout Utah and is common in arid canyons and rocky areas usually between 3,000 and 9,000 feet in elevation. Once established, it is very drought well. The fruit are an excellent source of bird food and the foliage is eaten by livestock and wildlife.

Amorpha fruticosa (California False Indigo) 52000 seeds per pound

Artemisia cana (Silver Sagebrush)

Artemisia filifolia (Sand Sagebush) Native and Introduced Perennial Shrub. Height, 2-4 Feet. Requires 6" minimum precipitation. 2,000,000 seeds per pound.

Artemisia nova (Black Sagebrush) Native Perennial Shrub; Height, up to 2'. Requires 6" minimum precipitation. 907,200 seeds per pound.

Artemisia tridentata ssp. vaseyana seeds (Mountain Big Sagebrush)

Artemisia tridentata v. tridentat (Basin Big Sagebrush). Native Perennial Shrub. Plant Height: 3-12'. Requires 10" annual rainfall minimum. 2,500,000 seeds per pound

Asclepias subulata (Desert milkweed). Sunset: 11-13; USDA: 9-11. Full sun to part sun. Heat tolerant. Low water needs. Evergreen, small shrub grows to 5' tall; 4' spread. Origin: California, Nevada, Arizona and Baja California.

Atriplex canescens (Four wing saltbush). 1800 seeds per oz. Grows from 2 to 6' tall. Does well in alkaline soils. Origin: Sonoran and Chihuahuan desert.

Atriplex confertifolia (Shadscale Saltbush). Native Perennial Shrub; Height, 1-3 Feet. Requires 4" minimum precipitation. 64,900 seeds per pound.

Atriplex cuneata (Castle Valley Clover) Native Perennial Shrub; Height, 6-12". Requires 6" minimum precipitation. 30,300 seeds per pound.

Atriplex gardneri (Gardner's saltbrush)