Photo: Michael J. PapayCC BY 4.0via iNaturalistresized / cropped
Butterfly Weed Plant Care
Asclepias tuberosa L.
Updated · Sources · How we source care data
Featuring bright orange flowers with contrasting green leaves, this plant originates from North America. Plant collectors are drawn to Asclepias tuberosa for its unique appearance and ability to attract butterflies and other pollinators to the garden.
Every 7–10 days
Full sun
60–85°F
40–60%
At a glance
How do you care for Butterfly Weed?
Water Butterfly Weed every 7–10 days, letting the top layer of soil dry out between waterings, and give it full sun. It prefers temperatures of 60–85°F (16–29°C) and 40–60% humidity. Fertilize it every 6 months during the growing season. The ASPCA lists it as toxic to cats and dogs, so keep it out of reach of pets.
Where Is the Butterfly Weed Native To?
What Is the Butterfly Weed?
Butterfly Weed (Asclepias tuberosa) belongs to the Apocynaceae family within the Asclepias genus. Butterfly Weed is native to eastern and southwestern North America. Butterfly Weed is also known as Butterfly Milkweed, Pleurisy Root, Indian Paintbrush.
Butterfly Weed displays an upright, clumping perennial growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Butterfly Weed produces clusters of small, colorful flowers in shades of pink, orange, or yellow.
Leaf size: approximately 6 inches.
How Often Should You Water a Butterfly Weed?
Asclepias tuberosa requires watering every 7–10 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 7–10 days
Let soil partially dry between waterings
What Light Does the Butterfly Weed Need?
Butterfly Weed thrives in full sun.
Light Requirement
Full sun
What Temperature and Humidity Does the Butterfly Weed Prefer?
Asclepias tuberosa grows best at temperatures of 60–85°F. Butterfly Weed prefers humidity levels of 40–60%.
Temperature
60–85°F
Humidity
40–60%
What Soil Mix Works Best for a Butterfly Weed?
Well-draining sandy loam with some organic matter. Good drainage is essential for Butterfly Weed to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Butterfly Weed?
Feed Butterfly Weed every 6 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every 6 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Butterfly Weed?
Repot every 2-3 years in early spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Butterfly Weed?
Butterfly Weed can be propagated through seeds, stem cuttings. Similar propagation techniques also apply to tropical milkweed plant care, which shares the same genus.
Is the Butterfly Weed Toxic to Pets and Children?
Toxic to cats and dogs
Source: ASPCA Animal Poison Control Center plant list, which covers Asclepias species (which includes Butterfly Weed). View the ASPCA entry
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Butterfly Weed?
Butterfly Weed is susceptible to aphids, milkweed bugs, spider mites. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
What USDA Hardiness Zone Does the Butterfly Weed Need?
Butterfly Weed grows outdoors in USDA Zone 3 – 9. It survives winters down to planting zone 3a. Butterfly Weed is native to eastern and southwestern North America.
Hardiness Zone
Zone 3 – 9
Keep exploring plants
Butterfly Weed is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Asclepias genus — compare its care with other Asclepias species on PlantoScan.
Asclepias is part of the Apocynaceae plant family — browse all Apocynaceae genera and species.
Butterfly Weed thrives in bright light and direct sun — see other bright-light plants.
More Asclepias Species
Other Asclepias species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Asclepias tuberosa L., family Apocynaceae (first published in Sp. Pl. : 217 (1753)) — World Flora Online record, IPNI name record, Wikidata.
- Pet toxicity: The ASPCA lists Asclepias species (which includes Butterfly Weed) as toxic to cats and dogs. Source: ASPCA Toxic and Non-Toxic Plant List.
- Photo: Michael J. Papay, CC BY 4.0, iNaturalist — original.
- Hardiness zone: USDA Zone 3 – 9, estimated from the plant's typical growing conditions.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
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