Butterfly weed Asclepias tuberosa Photo/Illustration: Steve Aitken 1 2 3 4 5 6 7 8 9 10 11 Butterfly weed (Asclepias tuberosa) ah-SKLEE-pee-us too-ber-OH-sah Genus: Asclepias Butterfly weed is a native perennial with flat-topped, orange or yellow flower clusters at the ends of its stems or in its leaf axils. From midsummer to autumn, it produces clusters of brightly colored flowers that attract insects, followed by fruit and showy seed. Plant in a border, meadow, butterfly garden, or wildflower garden. Noteworthy Characteristics: Very bright orange or yellow flowers. U.S. native. This plant's milky white sap may irritate skin. Its stiff, thick branches may act as treillage to support weaker neighboring plants. Attracts bees and butterflies. May be slow to emerge in spring. Care: Needs full sun and fertile, well-drained, loamy soil. They have taproots and resent disturbance. Propagation: Sow seeds in a cold frame in early spring. Divide plants or take basal cuttings in spring. Problems: Aphids and mealybugs can be a problem when flowering. In the southeast, rust and leaf spot are common. Overview Height 1 ft. to 3 ft. Spread 1 ft. to 3 ft. Growth Habit Clumps Light Full Sun Only Moisture Dry to Medium Maintenance Low Characteristics Attracts Song Birds, Attracts Butterflies, Attracts Hummingbirds, Self Seeds, Showy Flowers, Showy Seed Heads Bloom Time Early Fall, Fall, Late Summer, Summer Flower Color Salmon, Yellow Style Cottage Garden, Meadow Garden Seasonal Interest Summer Interest Type Perennials Related Plants to Asclepias tuberosa 1 2 3 4 5 6 7 8 9 10 11 Purple coneflower Echinacea purpurea 'Kim's Knee High' 1 2 3 4 5 6 7 8 9 10 11 Purple coneflower Echinacea purpurea ‘Bright Star’ 1 2 3 4 5 6 7 8 9 10 11 Purple coneflower Echinacea purpurea 1 2 3 4 5 6 7 8 9 10 11 Purple coneflower Echinacea purpurea 'Magnus' View the discussion thread.