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Silver Dalea
Dalea bicolor var. argyraea (D. argyraea)

Fabaceae (Leguminosae)

Silver dalea is a striking, rounded shrub with delicate silver-gray leaves and purple flower spikes in summer and fall. Native to the Trans-Pecos, where it grows in full sun on rocky limestone hills, it is extremely drought and heat tolerant. As a landscape plant, it needs little maintenance other than shearing in the spring. Silver dalea is an excellent choice for erosion control on dry rocky slopes, as a groundcover in dry, poor soil, or areas that receive reflected heat. It is especially effective in mass plantings; its fine foliage creates a soft effect. It must have full sun and well-drained soil to thrive. As it is difficult to propagate, it is rarely available commercially. It is hardy to about 10 degrees F. Another native of the Chihuahua desert, Dalea bicolor var. bicolor, is fast growing with green foliage and blue flowers but is less cold hardy.

Plant Habit or Use: groundcover
small shrub

Exposure: sun

Flower Color: purple

Blooming Period: summer

Fruit Characteristics: small indehiscent pod

Height: 2 to 3 feet

Width: 2 to 3 feet

Plant Character: evergreen

Heat Tolerance: very high

Water Requirements:

Soil Requirements: alkaline

USDA Hardiness Zone: 8

Additional Comments:

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