Butterfly weed (Asclepias tuberosa): colours, meaning, where it grows and when it blooms

Butterfly weed is a perennial wildflower native to eastern and southwestern North America. It grows upright with clusters of orange, yellow, or red flowers from spring to early autumn and is valued for attracting bees, butterflies, and other pollinators. The plant is grown in gardens and found in dry fields and open areas.

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Native to eastern and southwestern North America
Clusters of orange, yellow, or red flowers bloom from spring to autumn
Attracts bees, butterflies, and other pollinators
Roots and young pods were used by Native Americans for food and remedies
Contains toxic compounds and is not safe for medicinal use today

What does Butterfly weed look like?

Butterfly weed is a perennial plant that stands 30 to 100 cm tall. Its leaves are narrow, lance-shaped, and arranged in a spiral along the stem. The plant produces clusters of small, five-petaled flowers, usually bright orange but sometimes yellow or red, each cluster about 7.5 cm across. The stems are hairy and do not release milky sap when broken. After flowering, it forms long, slender seed pods filled with seeds attached to silky hairs.

Where does Butterfly weed come from?

Butterfly weed is native to eastern and southwestern parts of North America, from South Dakota to Texas and Mexico, and as far west as Utah and Arizona. It thrives in dry, sandy or gravelly soils and prefers full sun. The plant has long been recognized for its vibrant flowers and its ability to attract pollinators. Its scientific name, Asclepias tuberosa, refers to its tuberous root system.

When and how Butterfly weed blooms

The plant blooms from April to September, producing flower clusters in the upper leaf axils. It is most often grown from seed, as its deep taproot makes transplanting difficult. Seeds can be sown outdoors after frost, with flowering expected in the plant’s second or third year. It prefers dry, well-drained soil and full sun, and is hardy in a wide range of climates.

How Butterfly weed is used

Butterfly weed is grown in gardens for its showy flowers and as a food source for pollinators like bees and butterflies. Native Americans and settlers once used the boiled roots for traditional remedies and ate the young seed pods after careful preparation. The plant’s silky seed fibers were spun for candle wicks. Due to its toxicity, it is not recommended for medicinal use today.

Kinds of Butterfly weed

There are several subspecies, including Asclepias tuberosa subsp. interior found in central North America and subsp. rolfsii in the southeast. The 'hello yellow' cultivar is known for its yellow flowers. Some forms may have reddish flowers, possibly due to soil or genetic differences.

What Butterfly weed means

Butterfly weed is valued for attracting butterflies, especially monarchs, though it is not their preferred host. Its low cardenolide content means it offers less protection to monarch caterpillars from predators. The plant is sometimes called pleurisy root due to its historical medicinal use. It is not linked to any specific symbolism or festival.

Questions people ask about Butterfly weed

Where does butterfly weed come from?

Butterfly weed is native to eastern and southwestern North America, including parts of the United States, Canada, and Mexico. It grows wild in dry fields, prairies, and open areas with sandy or gravelly soil.

What does butterfly weed look like?

It is a perennial plant with upright stems, narrow lance-shaped leaves, and clusters of small, five-petaled flowers. The flowers are usually bright orange but can also be yellow or red. After flowering, it produces long seed pods with silky-haired seeds.

Is butterfly weed toxic?

Yes, butterfly weed contains toxic steroids that can cause weakness, seizures, and eye injuries if ingested. It should not be used as a remedy, especially by pregnant or nursing women or children.

What is butterfly weed used for?

It is grown in gardens for its colorful flowers and to attract pollinators. Historically, Native Americans and settlers used its roots for traditional remedies and its young seed pods as food after boiling. The plant’s fibers were also used for candle wicks.

Does butterfly weed attract monarch butterflies?

Butterfly weed can serve as a food plant for monarch caterpillars, but it is not their preferred host. Its leaves are rough and it has low cardenolide content, so monarchs tend to lay eggs on other milkweed species.

Good reading and sources

Where this page comes from

The facts on this page come from the Wikipedia article "Asclepias tuberosa", written by its contributors and used under the CC BY-SA 4.0 licence, and from its Wikidata record (CC0). Phool rewrote the text in its own words, with AI assistance, and compares every page with the article to make sure no passage is copied. It may be reused under the same CC BY-SA 4.0 licence with a link back.

It may contain mistakes. It is not medical or foraging advice: many flowers are poisonous, and traditional uses are reported, not recommended. If something is wrong, tell us. Last refreshed 2026-10-03.

Photo credits on this page

The small pictures above come from Wikimedia Commons under free licences. Some are cropped to fit.

Chrysanthemum: Muhammad Mahdi Karim, GFDL 1.2, source

Plumeria: Renesis, CC BY-SA 3.0, source

Almond: Ivar Leidus, CC BY-SA 4.0, source

Mandevilla: Shuvaev, CC BY 4.0, source

Pinwheel flower: SKsiddhartthan, CC BY-SA 4.0, source

Peach: Jack Dykinga, USDA, Public domain, source

Cactus: G. Mütrel, Leipzig ; Berlin ; Wien : F.A. Brockhaus, Public domain, source

Oleander: Unknown author, CC BY 2.5, source

Butterfly weed