Form: A tall, multi-stemmed shrub that can be pruned into a tree.
Leaf retention: Semi-evergreen, with new leaves replacing old at
same time, during bloom. Drought deciduous.
Growth rate: Slow to moderate, depending on water.
Mature Size: 20' high and 15' wide.
Flowers: Very tiny, clustered flowers with male parts appearing
before female, avoiding self-pollination. Flowers have purple (male)
anthers and yellow aging to brown (female) stigma and ovaries in green
sepals. No petals.
Bloom: Mid winter.
Fruit: Small, winged seed.
Leaves: Green compound leaflets, 2-3 inches long, lance-shaped,
margins slightly toothed. Provides light to medium shade.
Stems: No thorns. Bark is light gray and smooth.
Wildlife: Attracts bees. Browsed by mammals.
Toxic / Danger: No.
Origin: Arizona to Texas and Mexico.
Cultivation and Uses
USDA hardiness zones: 7b-10.
Heat tolerant: Yes.
Drought tolerant: Yes.
Sun: Full sun to part shade.
Water once established: Deep water once or twice a month at drip line.
Watering more often improves rate of growth. In first five years, may need
weekly watering during hottest months of year for best appearance.
Soil: Well-drained, pH 6.6-8.5 (neutral to alkaline).
First Year Care: Deep water once week, at drip line,
coordinating with rains, to establish a strong root system.
Prune: In winter, lower branches can be removed to train into a tree.
Propagation: Seed (stratified).
Uses: Ornamental, shade.
The tree pictured is planted near an east-facing wall, partly shading it
from the afternoon sun.
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