United States Edition

Swamp milkweed      

Asclepias incarnata

Swamp milkweed is a member of the Asclepias family. Its botanical name is Asclepias incarnata.

Flowers are a nectar source for both butterflies and hummingbirds.
Attracts butterflies
Attracts caterpillars (Monarch)

Erect and clump forming plant native to Missouri, USA commonly found in swampy areas, river-bottom lands and wet meadows throughout the State. Grows from 3 to 4 feet tall and produces fragrant pink to mauve flowers and very rarely white.3

Blooms normally display as a colour very similar to   Baby pink and   Light fuchsia pink and   White. Leaves usually appear in   Kelly green and   Cadmium green colour. Swamp milkweed grows as a perennial and is a flower. Being a perennial plant, it tends to grow best over several years (approx 3 years and greater). Swamp milkweed is known for its forb-like habit and growing to a height of approximately 60.96 cm (1.98 feet). This plant tends to bloom in mid summer. Try planting Swamp milkweed if you'd like to attract butterflies and birds to your garden.

United States is believed to be where Swamp milkweed originates from.

Swamp milkweed is known to be toxic to humans and/or animals, so be careful where you position and how you handle this plant.

This plant info is provided by the myfolia gardener's wiki. All details about Swamp milkweed have been kindly provided by our members.

How to grow Swamp milkweed

  • Full Sun

    OR +
  • Partial Sun

  • Very High

A full sun / partial sun position will ensure your plant thrives and remember to water very often. Use Zone 3 - Zone 9 as your guideline for the appropriate climate for this plant.

See our list of companion Plants for Swamp milkweed to see which plants you should plant in close proximity to encourage growth.

Growing Swamp milkweed from seed

Germination is very slow and benefits from cold stratification. Plant seeds on a moist medium, lightly covered and keep cool and moist but not freezing for several months, then place in moderately warm place.

Transplanting Swamp milkweed

Common Swamp milkweed problems

These problems, diseases and pests are known to affect Swamp milkweed plants:

Danaus plexippus or the Monarch Butterfly, and Danaus gilippus or the Queen Butterfly both use all kinds of milkweed for their larva (caterpillars). The caterpillars may remove all or most of the leaves. To deal with this plant your milkweed in locations that you won’t mind if a mother butterfly decides to make it her nursery. 2

  • Aphids

    Also known as greenfly and blackfly, Aphids are a common sap-sucking garden pest.

Swamp milkweed Etymology

Aesculapius is the Greek god of medicine due to milkweeds being historically used medicinally. Incarnata means flesh-colored.

Other names for Swamp milkweed

Butterfly weed, Pink Milkweed

Misspellings: butterflyweed, milk weed,

Swamp milkweed care instructions

How long does Swamp milkweed take to grow?

These estimates for how long Swamp milkweed takes to sprout, grow and harvest are from real observations from real gardeners, right around the world. Start logging and journaling your observations to participate!


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