Swamp Milkweed

Shipping begins the week of September 11th, 2023 Learn More…
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Fragrant, rose-pink, nectar-rich flower clusters atop tall, sturdy stems give Swamp Milkweed a stately presence in the garden or meadow. A favorite of many pollinators, Milkweeds (Asclepias) are the host plant for Monarch butterflies, and the sweet pink blooms will be buzzing with activity. These impressive native wildflowers feature narrow, tapering foliage, and mid-to-late-summer blooms are followed by attractive seed pods that add interest to the fall garden. Thanks to its bitter milky sap, Milkweed is deer and rabbit resistant. (Asclepias incarnata)
Zones 3 - 6
Bee Friendly
Attract Butterflies
Attract Hummingbirds
Deer Resistant
Great For Mass Plantings
Multiplies / Naturalizes
Fragrant Flower / Foliage
Good For Containers
Light Requirements
Full Sun
Mature Height 36-48" tall , 2-3' wide
Bloom TimeMid summer

USDA Hardiness Planting Zones

To determine if a plant is sufficiently cold hardy, the USDA created numbered zones indicating winter low temperatures; the lower the zone number the colder the winter.

  • If the coldest winter temperature expected in your area is -15°F (zone 5) then any plants rated zones 3-5 will survive the winter temperatures in your area.
  • If you live in very warm winter areas (zones 9-11) plants with zones 3-4 ratings are not recommended. The lack of freezing winter temperatures do not provide a time for winter dormancy (rest).

Find Your Planting Zone:

Plant Information
As the common name suggests, Swamp Milkweed is native to wet meadows and riparian zones throughout eastern North America. Growing along streambanks and pond edges, Swamp Milkweed looks right at home alongside water features, and its tolerance to wet soils makes Swamp Milkweed useful in rain gardens, bioswales, and other wet spots in the landscape. However, plants can also thrive in well-drained garden soils. Asclepias incarnata plants have a clumping habit and naturalize well in the landscape. Milkweed serves as a larval host to monarch and queen butterflies, so look for caterpillars munching on the leaves in early summer. In addition to butterflies, the blooms provide a valuable nectar source to honeybees, bumblebees, and other pollinators, and are occasionally visited by hummingbirds. Plants will perform best in full sun in moist clay, loamy, or average soils, in hardiness zones 3 to 6. Plants have deep taproots and are best left undisturbed once established. Be patient, as they are slow to emerge in spring.
More Information
Associated SKUsAM020503
AM020352 (Plant - 3" Pot)
AM020353 (Tray of 16)
Common Name
Swamp Milkweed
Botanical Name
Asclepias incarnata
3, 4, 5, 6
Light Requirements
Full Sun
Flower Color
Mature Height
36-48" tall
Mature Spread
2-3' wide
Bloom Time
Mid summer
Ships As
Potted Plant
Soil Type
Average Soil, Loamy Soil, Clay Soil
Soil Moisture
Moist / Wet
Bee Friendly, Attract Butterflies, Attract Hummingbirds, Deer Resistant, Great For Mass Plantings, Multiplies / Naturalizes, Fragrant Flower / Foliage, Good For Containers
Planting Time
Neonicotinoid Free
Ships to Hawaii, Alaska & Canada
Planting & Care

How to Plant Milkweed, Step-by-Step:

  1. Choose fast-draining soil.
  2. Plant in full sun.
  3. Do NOT disturb roots, especially tap roots.
  4. Water sparingly.

Learn More


Further Reading:

ZoneShipping Status
Zone 2Shipping begins the week of September 11th, 2023
Zone 3Shipping begins the week of September 11th, 2023
Zone 4Shipping begins the week of September 11th, 2023
Zone 5Shipping begins the week of September 11th, 2023
Zone 6Shipping begins the week of September 18th, 2023
Zone 7Shipping begins the week of October 2nd, 2023
Zone 8Shipping begins the week of October 9th, 2023
Zone 9Shipping begins the week of October 9th, 2023
Zone 10Shipping begins the week of October 16th, 2023

As soon as your order is placed you will receive a confirmation email. You will receive a second email the day your order ships telling you how it has been sent. Some perennials are shipped as potted plants, some as perennial roots packed in peat.  The ‘Plant Information’ section describes how that item will ship. All perennials and spring-planted bulbs are packaged to withstand shipping and are fully-guaranteed. Please open upon receipt and follow the instructions included.

Perennials and spring-planted bulbs are shipped at the proper planting time for your hardiness zone. Perennial and spring-planted bulb orders will arrive separately from seeds. If your order requires more than one shipment and all items are shipping to the same address, there is no additional shipping charge. See our shipping information page for approximate ship dates and more detailed information. If you have any questions, please call Customer Service toll-free at (877) 309-7333 or contact us by email.

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Canadian Shipping Charges

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$50 to $74.99$24.95
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$100 and Over$39.95

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