Leaf retention: Deciduous, or may die to the ground
in a winter freeze and grow back from roots.
Growth rate: Moderate.
Mature Size: Usually 4-6' high and wide, but can reach 10'.
Flowers: Clustered at branch tips, 1" wide, five yellow,
cupped petals. No nectar produced.
Bloom: Spring, summer.
Fruit: Long, narrow, dark brown bean pods.
Leaves: Small, Oval-shaped, dark green.
Stems: Woody. Possible thorns.
Wildlife: Attracts butterflies, bees. Caterpillar food
plant for several species of sulphur butterflies.
Toxic / Danger: All parts are toxic.
Origin: Arizona through Texas and Mexico.
Cultivation and Uses
USDA hardiness zones: 7b-11.
Heat tolerant: Yes.
Drought tolerant: Yes.
Sun: Full sun.
Water once established: Monthly.
Soil: Well drained, dry, pH 6.1-8.5 (slightly acidic to
Prune: After last freeze, or early winter in regions without
freezes, trim branches to shape, encouraging new growth.
Litter: Moderate flower and leaf drop.
Propagation: Seed, cuttings.
Uses: Ornamental, butterfly caterpillar nursery.
Hosts caterpillars of several sulphur butterfly species. They will do
no permanent harm to plant.
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