Colorado State University

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CSU Extension - A division of the Office of Engagement. Providing trusted, practical education to help you solve problems, develop skills and build a better future.
Established 1908

(303) 637-8100

Butterfly Weed

Asclepias tuberosa

Scientific Name	Asclepias tuberosa
Common Name	Butterfly Weed
Family	Apocynaceae
Habit	Tuberous Perennial
Growth Form	Grows in clumps to 1-3′, narrow stems with narrow, lance shaped leaves.
Mature Size	Height: Up to 3′
Flowers	Bright Orange to yellow-orange flower clusters in June to August. Showy.
Hardiness	Zones 3-9
Sun Requirements	Full Sun
Water Requirements	Dry to medium. Well drained. Drought tolerant.
Soil Requirements	Sandy, Loamy, Drought/Dry soil.
Other Info	Deer resistant Attracts butterflies, humming birds Bee friendly