Asclepias incarnata

Rose (Swamp) Milkweed

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Rose Milkweed (Asclepias incarnata) is a showy pink blooming Asclepias species that is a food plant for Monarch butterfly caterpillars and a nectar source for adult butterflies. Also known as Swamp Milkweed, it grows best in moist or wet soils.

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Zones 3 - 9
Advantages
Deer Resistant
Deer Resistant
Attract Butterflies
Attract Butterflies
Attract Hummingbirds
Attract Hummingbirds
Bee Friendly
Bee Friendly
Fragrant Flower / Foliage
Native
Multiplies / Naturalizes
Light Requirements
Full Sun
Full Sun
Annual Rainfall
2030
20 to 30"
3040
30 to 40"
4050
40 to 50"
Bloom Time Early to late summer
Shipping Shipping begins in Mid May based on ground temperatures, warmest zones first. More shipping info Learn More…
Size Plant - 5" deep pot
SKU HBLNS51

Details

Rose Milkweed (Asclepias incarnata) is a showy pink blooming Asclepias species that is a food plant for Monarch butterfly caterpillars and a nectar source for adult butterflies. Also called Swamp Milkweed, this milkweed actually grows well in both moderately moist and wet soils. This perennial milkweed is also an excellent choice for rain gardens. Asclepias incarnata (also known as Swamp Milkweed) native range: AL, AR, CO, CT, DC, DE, FL, GA, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, PA, RI, SC, SD, TN, TX, UT, VA, VT, WI, WV, WY.
SKU HBLNS51
Common Name Rose (Swamp) Milkweed
Botanical Name Asclepias incarnata
Zones 3, 4, 5, 6, 7, 8, 9
Light Requirements Full Sun
Flower Color Pink
Mature Height 3-4' tall
Mature Spread 3' wide
Bloom Time Early to late summer
Ships As Potted Plant
Native Yes
Planting Time Spring / Summer, Fall
Soil Type Clay Soil, Sandy Soil, Average Soil
Soil Moisture Average, Moist/Wet
Amount of Rain 20 to 30", 30 to 40", 40 to 50"
Advantages Deer Resistant, Attract Butterflies, Attract Hummingbirds, Bee Friendly, Fragrant Flower / Foliage, Native, Multiplies / Naturalizes
Ideal Region Anywhere In The US, Northeast, Southeast, Midwest, Southwest, West, Pacific Northwest
Neonicotinoid-Free Yes - Learn More
Ships to Hawaii, Alaska & Canada No

Planting Guides

Asclepias (Milkweed) are sun loving plants that are essential perennials for monarch butterflies providing food for caterpillars and nectar for adult butterflies. They bloom from mid-summer into early fall and, with their milky sap, are resistant to rabbits and deer.

Asclepias can be divided into two groups for plant care; Asclepias tuberosa with orange (sometimes yellow) flowers and all the other species with pink (sometimes white) flowers.

  • Asclepias tuberosa (Orange Butterfly Weed) - this perennial stays dormant until later in the spring than many other plants, especially when grown in pots. It's fine to plant dormant plants; don't up-pot them for planting later in the growing season.
  • Preferred growing conditions:

    1. Need sandy or gravelly soils (except the Clay form which does well in heavier soils including dry clay.)
    2. Does best with gravel mulches.
    3. After their second growing season, only requires deep but infrequent watering. Plant in full hot sun.
    4. Just a few handfuls of compost and Yum Yum Mix added to the planting hole is enough. Don't plant into a rich, highly-amended soil.

    Special comments:

    • When planting dormant plants, water thoroughly after planting and wait to water again until the plant comes into active growth, at which time a deep watering every week or so is adequate. Take care not to overwater young transplants.
    • Asclepias has a long, carrot-like tap root that should remain undisturbed after planting and should NOT ever be divided.
  • Most Asclepias species are late to wake up in the spring, and will often be shipped as dormant plants. Don't despair if your milkweed is asleep. The white roots and woody crown are alive just waiting for consistently warm weather to wake up and begin to grow.these perennial species stay dormant later in the spring than many other plants, especially when they are grown in pots. It's fine to plant dormant plants; don't up-pot them for planting later in the growing season.
  • Preferred growing conditions:

    1. These species grow in a wide range of soil types, including clay.
    2. They don't need mulching (except in very hot climates).
    3. These are moisture-loving perennials and do well in wet to moderately moist soil conditions.
    4. Plant in full to part sun areas.
    5. They like compost enriched soils at planting time.

    Special comments:

    • Asclepias syriaca and A. speciosa will spread to make big patches of plants and are best planted in parts of the landscape where they won't crowd out less vigorous plants. Not recommended for the prime spots in your perennial beds.
    • Asclepias incarnata (Swamp Milkweed) is a more refined grower and is fine to include in perennial beds.

Oftentimes, Milkweeds won't grow much their first season in the ground, so be patient. They are establishing their root system and crown. By the second growing season, the plants will begin to get bigger and look more robust. Asclepias species are an odd bunch and don't behave like many other more familiar perennials. So be patient and accept their quirky nature.

Garden care:

  1. Fertilize Asclepias just once in fall with Yum Yum Mix and Planters II. - Naturalized plantings don't need additional fertilization.
  2. To encourage re-seeding and provide winter interest with their ornamental seed pods, leave the stems intact over the winter. In mid-spring, remove old stems just above ground level.
  3. All species of Asclepias are late to emerge in the spring, so don't be concerned if other perennials come up first and they remain dormant.

View more Planting Guides, or download our complete Planting Guide for tips on caring for your plants when you receive your order, as well as planting instructions for Perennials, Spring-Planted Bulbs, Fall-Planted Bulbs, Cacti & Succulents, Xeric Plants and more.

Shipping

Plant Shipping: Buy now and we will ship your order at the ideal planting time for your region. Spring-Planted Perennial and Bulb orders will ship from April 23-June 30, warmest zones first.

Most plant and bulb orders arrive within 2-6 days, or less, of leaving our greenhouses in Colorado. This prompt delivery is provided without additional express charges.

Grass Plugs Will ship at planting time in spring, beginning in late February.

Wildflower Seed & Grass Seed Orders ship within 2-3 days.

Standard shipping costs are $4.99 and up, depending on the size of the order.

Make Fast Even Faster: For ‘Rush’ same week delivery, please call customer service at 800-925-9387.

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Reviewsby PowerReviews

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by PowerReviews
High Country GardensAsclepias incarnata
 
4.0

(based on 2 reviews)

Ratings Distribution

  • 5 Stars

     

    (1)

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Reviewed by 2 customers

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(12 of 12 customers found this review helpful)

 
5.0

Grows terrific in PA -- bees. butterflies & more

By 

from LehighValley PA

About Me Avid Gardener

Pros

  • Pollinator friendly

Cons

    Best Uses

    • Garden
    • Outdoors

    Comments about High Country Gardens Asclepias incarnata:

    Very pleased with this -- which has taken off in the second year. Lots of different pollinators like the blooms, mostly bumblebees here, but I have seen a lot of other things visiting the flowers, too. Including at least one monarch butterfly, the first one I have seen in my life.

    • Primary use:
    • Personal

    (5 of 11 customers found this review helpful)

     
    3.0

    All grew well though none bloomed.

    By 

    from Sheridan WY

    About Me Avid Gardener

    See all my reviews

    Verified Buyer

    Pros

    • Accurate Instructions
    • Healthy

    Cons

      Best Uses

      • Garden
      • Outdoors

      Comments about High Country Gardens Asclepias incarnata:

      Waiting to see how they do this year after a tough winter.

      • Primary use:
      • Personal

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      Q & A

      Suggested Companion Plants:

      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:

      Enter your Zip Code to find your USDA Planting Zone

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