Abies alba (Silver Fir) Evergreen tree spread 20-40 feet Cold stratify seed 30 days. Seed per lb: 9000.

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). A perennial, deciduous, shrub or tree in the Fabaceae family native to Central America and the United States. It is also found in South America, India and Pakistan. 2,350 seeds per oz.

Acacia arabica. 2700 seeds per pound

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 decurrens dealbata

Acacia decurrens mollis

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 sieberiana

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).

Acanthus mollis

Acer glabrum (Rocky mountain maple) 6003-22. 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.

Alnus incana ssp. tenuifolia (Thinleaf Alder)

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

Arctostaphylos pungens (Pointleaf manzanita) 1400 seeds per oz.

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 ludoviciana (Prairie Sage). Native Perennial Shrub; Height, 1-2 Feet. Requires 10" minimum precipitation. 4,500,000 seeds per pound.