Asclepias incarnata Seeds

Swamp Milkweed Seeds

  • Pink Asclepias incarnata Seeds, Asclepias incarnata, Swamp Milkweed Seeds

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Asclepias incarnata (Swamp Milkweed) is a wildflower with very beautiful clusters of pink flowers in summer and is a favorite larval food for Monarch butterflies.

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$3.95
per packet
Zones 3 - 8
Advantages
Deer Resistant
Deer Resistant
Attract Butterflies
Attract Butterflies
Attract Hummingbirds
Attract Hummingbirds
Bee Friendly
Bee Friendly
Light Requirements
Full Sun
Full Sun
Half Sun / Half Shade
Half Sun / Half Shade
Bloom Time Summer
Shipping Most orders ship within 5 business days. More shipping info Learn More…
Size Packet
SKU HAS6LPK

Details

Asclepias incarnata (Swamp Milkweed) is a wildflower with very beautiful clusters of pink flowers in summer and is a favorite larval food for Monarch butterflies. It grows in medium to moist soil conditions (it doesn't need a swamp) and many types of soil including clay. A great species for rain gardens. USDA zones 3-8.
SKU HAS6LPK
Common Name Swamp Milkweed Seeds
Botanical Name Asclepias incarnata
Seed Life Cycle Perennials
Light Requirements Full Sun, Half Sun / Half Shade
Flower Color Pink
Mature Height 36-48" tall
Bloom Time Summer
Ships As Seed
Seeds Per Pound 76,800
Seeds Per Packet 45
Days to Germination Cold Stratification - 30 days
Soil Moisture Average, Moist/Wet
Soil Type Clay Soil, Sandy Soil, Loamy Soil, Moist/Wet Soil
Native To North America
Native To North America
Native Yes
Ideal Region Northeast, Southeast, Midwest, Southwest, West, Pacific Northwest
Zones 3, 4, 5, 6, 7, 8
Advantages Deer Resistant, Attract Butterflies, Attract Hummingbirds, Bee Friendly
Storable Yes- You can store your seed in any cool (not freezing) dry place that is not subject to extreme temperature variations.
Non-GMO Yes
Neonicotinoid-Free Yes - Learn More
Ships to Hawaii, Alaska & Canada Yes

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

Most orders ship within 3-5 business days.

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. Orders for in-season products ship within 5 business days. Depending on your order date, we may hold your shipment to combine it with other products on your order, if applicable.

See our Shipping Information page for more detailed information. If you need express shipping or have any questions, please call Customer Service toll-free at (877) 270-5187 or Contact Us by email.

Reviewsby PowerReviews

REVIEW SNAPSHOT®

by PowerReviews
High Country GardensAsclepias incarnata Seeds
 
1.7

(based on 3 reviews)

Ratings Distribution

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Reviewed by 3 customers

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(1 of 1 customers found this review helpful)

 
2.0

Did the cold stratification as described.

By 

from Moorhead, MN

About Me Avid Gardener

Comments about High Country Gardens Asclepias incarnata Seeds:

Did the cold stratification as described. Now they are in peat pots in the sun covered with plastic - trying to get a spout. Nothing yet after a week. Any other ideas to get them growing?

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(3 of 3 customers found this review helpful)

 
2.0

Wish They Germinated and Grew more Easily

By 

from Sheridan, WY

About Me Avid Gardener

Verified Reviewer

Pros

  • Accurate Instructions

Cons

  • Low Germination Rate

Best Uses

  • Garden

Comments about High Country Gardens Asclepias incarnata Seeds:

I just can't get these guys started but I'll keep trying. Eventually I'll find the perfect way to get more of them to germinate and survive transplanting in the flower bed.

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  • Personal

(2 of 2 customers found this review helpful)

 
1.0

All duds - not one geminated!

By 

from Chester, NY

Verified Reviewer

Comments about High Country Gardens Asclepias incarnata Seeds:

All duds - not one seed geminated!

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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:

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