Asclepias asperula (Antelope-horns) is a clump-forming, perennial herb that thrives in well-drained, rocky or sandy soils and adapts well to full sun. Reaching heights of 1-2 feet, it features narrow, lance-shaped leaves and densely hairy stems. This plant is known for its distinctive green and white flower clusters that bloom heavily in the spring and sporadically through fall. As the seed follicles curve and grow, they resemble antelope horns, giving the plant its common name. Asclepias asperula is a vital host plant for Monarch and Queen butterfly caterpillars, attracting pollinators throughout the growing season.
Scientific Name: Asclepias asperula
Origin: Central U.S. to Texas, west to Idaho and California
Height: 1-2 feet
Spread: 12-24 inches
Light: Full Sun
Water Needs: Medium
USDA Zones: 7-11
Bloom Dates: March to October
