Asclepias syriaca

Common Milkweed

 
 
  • Asclepias syriaca
  • Asclepias syriaca

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Asclepias syriaca is a gorgeous plant that produces purple/pink flower clusters that wildflower gardeners love and spreads quickly. This native perennial is a primary food source for the Monarch butterfly providing large leaves for caterpillars and big pink globe-like flowers that provide nectar for the adult butterflies. Planting it will help to support Monarch populations. Perennial.

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Zones 3 - 9
Advantages
Deer Resistant
Deer Resistant
Attract Butterflies
Attract Butterflies
Bee Friendly
Bee Friendly
Fragrant Flower / Foliage
Native
Light Requirements
Full Sun
Full Sun
Morning Sun & Afternoon Shade
Morning Sun & Afternoon Shade
Annual Rainfall
Average
Moist/Wet
10 to 20", 20 to 30", 30 to 40"
Bloom Time Mid to late summer
Shipping Shipping begins in late February based on ground temperatures, warmest zones first. More shipping info Learn More…
Size Plant - 5" deep pot
SKU HBLXN51

Details

36-48" tall x 24-30" wide. Asclepias syriaca is a very familiar plant to many eastern gardeners. This perennial is perfect for as a filler between your taller perennials and adds a nice touch of fragrance mid-late summer. The foliage is thick and glossy so it adds texture to help your garden look lush even in the peak of the summer! Native to the US from Canada to Georgia, and west to Texas. Reseeds in fall but is very easy to harvest. Clip off the seed pods before they open to help control growth but be sure to leave the foliage! Common Milkweed is vital for the survival of the Monarch Butterfly which their population has been in a slow decline over the years. The large leaves are an essential food plant for Monarch caterpillars. Watch as the eggs hatch and larvae grow into the signature yellow striped caterpillars. Planting this perennial is a wonderful way to bring more excitement to your garden while also helping our native pollinators to thrive! ("Butterfly Weed" is a close relative, with bright orange flowers.) The plants spread vigorously by underground roots and should be planted inside areas of your landscape where it can be allowed to spread without overrunning other ornamental perennials. Ditches, fence lines and other areas with average to damp soils are ideal. Asclepias syriaca Native Range: AL , AR , CT , DC , DE , GA , IA , IL , IN , KS , KY , LA , MA , MD , ME , MI , MN , MO , MS , MT , NC , ND , NE , NH , NJ , NY , OH , OK , OR , PA , RI , SC , SD , TN , TX , VA , VT , WI , WV.

SKU HBLXN51
Common Name Common Milkweed
Botanical Name Asclepias syriaca
Zones 3, 4, 5, 6, 7, 8, 9
Light Requirements Full Sun, Morning Sun & Afternoon Shade
Flower Color Pink
Mature Height 3-4' tall
Mature Spread 24-30" wide
Bloom Time Mid 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 10 to 20", 20 to 30", 30 to 40"
Advantages Deer Resistant, Attract Butterflies, Bee Friendly, Fragrant Flower / Foliage, Native
Poisonous Yes
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

Tips For Growing Milkweed/Butterflyweed (Asclepias)

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.

1. 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.

  • Need sandy or gravelly soils (except the Clay form which does well in heavier soils including dry clay.)
  • Does best with gravel mulches
  • After their second growing season, only requires deep but infrequent watering. Plant in full hot sun.
  • ust 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.
  • 2. Asclepias speciosa, A. syriaca. A. incarnata (Milkweed) - 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:

  • These species grow in a wide range of soil types, including clay.
  • They don't need mulching (except in very hot climates).
  • These are moisture-loving perennials and do well in wet to moderately moist soil conditions.
  • Plant in full to part sun areas.
  • 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.
  • Garden care:

    • Fertilize Asclepias just once in fall with Yum Yum Mix and Planters II. - Naturalized plantings don't need additional fertilization.
    • 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.
    • 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 February 27-June 30, warmest zones first. Most plant orders will arrive within 3-4 days, or less, of leaving our greenhouses. This prompt delivery is provided without additional express charges.

    Grass Plugs Will ship at planting time in spring 2017, 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.

    More Shipping Info

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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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