Robinia pseudoacacia
Black Locust
Fabaceae (Leguminosae)
Deciduous, Trees
ROBINIAFairly fast growing plants, well adapted to hot, dry regions. Leaves are divided like feathers into many roundish leaflets. Clusters of white or pink, sweet pea-shaped flowers bloom from midspring to early summer, followed by bean-like pods about 4 in. long.
Locust trees tolerate poor soil and can get by on little or no water, but they do have some drawbacks: their wood is brittle, roots are aggressive, and plants often spread by suckers.
Native to the eastern and central United States. Fast growth to 40 to 75 ft. tall, 30 to 60 ft. wide, with rather sparse, open branching habit. Deeply furrowed brown bark. Thorny branches. Leaves divided into 7-19 leaflets, each 1-2 in. long. White, fragrant, 1/2–3/4-in.-long flowers are held in dense, pendent clusters that reach 4-8 in. long.
Philadelphus lewisii
Native to western North America; the state flower of Idaho. Fountain-shaped, loosely branched shrub 4&...
Alnus glutinosa
Native to Europe, North Africa. Probably best as multistemmed tree; grows moderately quickly to 7...
Pinus edulis
Native from California’s desert mountains east to New Mexico and Texas, north to Wyoming. Grows ...
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