Butterfly Weed Plant Care

Asclepias tuberosa L.

Asclepias tuberosa, commonly known as butterfly weed, is a species of milkweed native to eastern and southwestern North America. It is commonly known as butterfly weed because of the butterflies that are attracted to the plant by its color and its copious production of nectar.

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Water

Every 7–10 days

Light

Full sun

Temp

60–85°F

Humidity

40–60%

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 inches tall with a spread of approximately 2 inches. 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 conditions. The optimal light range is 2000–3000 lux. Avoid placing Butterfly Weed in direct, harsh sunlight for extended periods, as this can scorch the foliage.

Light Requirement

Full sun

2000–3000 lux

What Temperature and Humidity Does the Butterfly Weed Prefer?

Asclepias tuberosa grows best at temperatures between 60°F and 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 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 swamp milkweed plant care, which shares the same genus.

Fertilizing

Every 6 months

During the growing season

Is the Butterfly Weed Toxic to Pets and Children?

Toxic to Pets & Children

Toxic to humans and pets if ingested

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.

What USDA Hardiness Zone Does the Butterfly Weed Need?

Butterfly Weed grows outdoors in USDA Zone 13a. Native to eastern and southwestern North America, Butterfly Weed is adapted to warm climates. In cooler regions, grow Butterfly Weed as a houseplant or bring it indoors before the first frost.

Hardiness Zone

Zone 13a

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.

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:

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