Create Your Garden

Asclepias syriaca (Common Milkweed)

Common Milkweed, Common Silkweed, Milkweed, Silk Grass, Silky Swallow Wort, Virginian Silk

Showy Milkweed, American Silkweed, Jewelweed, Silken Cissy, Silkweed, Swallow Wort, White Indian HempAsclepias syriaca, Common Milkweed, Common Silkweed, Milkweed, Silk Grass, Silky Swallow Wort, Virginian Silk, Pink flowers
Showy Milkweed, American Silkweed, Jewelweed, Silken Cissy, Silkweed, Swallow Wort, White Indian HempAsclepias syriaca, Common Milkweed, Common Silkweed, Milkweed, Silk Grass, Silky Swallow Wort, Virginian Silk, Pink flowers

Asclepias syriaca (Common Milkweed) is a rhizomatous perennial prized for its domed clusters of sweetly scented, pinkish-purple, starry flowers, which bloom from early to late summer. Flowers are a great nectar source for butterflies, hummingbirds, bees, and other beneficial insects. The blooms occur in the upper leaf axils of upright stems clad with thick, large, oval, fresh green leaves adorned with red veins. They give way to prominent seed pods in the fall, which look great in dried flower arrangements. When the seed pods open, they reveal seeds with long, silvery-white, silky hairs. This is one of the easiest and fastest to establish of milkweeds – A great choice for the flower garden and for natural settings. Milkweed plants are critical to monarch butterflies‘ survival, whose population in North America has plummeted by 90% in the last 20 years. By planting milkweed in your own garden, you can help reverse the fortune of these beautiful insects!

  • Grows up to 3-4 ft. tall (90-120 cm) and 9-12 in. wide (22-30 cm). Will spread rapidly by rhizomes to form large colonies. May self-seed if seed pods are not removed prior to splitting open.
  • Thrives in full sun in dry to medium well-drained soils. Does well in poor, dry, gravelly soils
  • Low maintenance, this perennial plant is generally pest and disease-free. Deer resistant.
  • Perfect for sunny borders, cottage gardens, butterfly gardens, and prairies or naturalized areas.
  • Toxic to dogs, toxic to cats, toxic to horses.
  • Native to North America

Grow Milkweed, Save Monarch Butterflies: A Step-by-Step Guide


By providing the right growing conditions, you can enjoy healthy and vibrant milkweed in your garden while supporting pollinator populations.

Requirements

Hardiness 3 - 9
Heat Zones 2 - 9
Plant Type Perennials
Plant Family Apocynaceae
Genus Asclepias
Common names Common Milkweed, Milkweed
Exposure Full Sun
Season of Interest Summer (Early, Mid, Late)
Height 3' - 4'
(90cm - 120cm)
Spread 9" - 1'
(23cm - 30cm)
Spacing 12" (30cm)
Maintenance Low
Water Needs Low, Average
Soil Type Chalk, Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Fragrant, Showy
Native Plants United States, Northeast, Pennsylvania, Rhode Island, Vermont, Connecticut, Delaware, Maine, Massachusetts, Maryland, New Hampshire, New Jersey, New York, Missouri, Nebraska, Minnesota, North Dakota, Ohio, Kansas, South Dakota, Wisconsin, Indiana, Midwest, Illinois, Michigan, Iowa, Pacific Northwest, Oregon, Southeast, Louisiana, Mississippi, North Carolina, South Carolina, Tennessee, Virginia, West Virginia, Alabama, Arkansas, Georgia, Kentucky, Southwest, Texas, Oklahoma, Rocky Mountains, Montana
Tolerance Drought, Deer, Dry Soil, Rocky Soil
Attracts Bees, Butterflies, Hummingbirds
Garden Styles Informal and Cottage, Prairie and Meadow
How Many Plants
Do I Need?
Explore Great Plant Combination Ideas
Asclepias (Milkweed)
Not sure which Asclepias (Milkweed) to pick?
Compare Now

Alternative Plants to Consider

Asclepias eriocarpa (Woollypod Milkweed)
Asclepias subulata (Rush Milkweed)
Asclepias perennis (Aquatic Milkweed)
Asclepias cordifolia (Heartleaf Milkweed)
Asclepias linaria (Pine-Needle Milkweed)
Asclepias quadrifolia (Fourleaf Milkweed)

Recommended Companion Plants

Crocosmia (Montbretia)
Anthemis tinctoria (Golden Marguerite)
Kniphofia (Red Hot Poker)
Agapanthus (African Lily)

Find In One of Our Guides or Gardens

How to Create an Enchanting Butterfly Garden
For the Love of Butterflies: Best Flowers to Attract them to Your Garden
6 Reasons You Should Create a Butterfly Garden
Grow Milkweed, Save Monarch Butterflies: A Step-by-Step Guide
Asclepias (Milkweed)
Save Monarch Butterflies with these Ornamental Milweeds
While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.
Buy Plants

Requirements

Hardiness 3 - 9
Heat Zones 2 - 9
Plant Type Perennials
Plant Family Apocynaceae
Genus Asclepias
Common names Common Milkweed, Milkweed
Exposure Full Sun
Season of Interest Summer (Early, Mid, Late)
Height 3' - 4'
(90cm - 120cm)
Spread 9" - 1'
(23cm - 30cm)
Spacing 12" (30cm)
Maintenance Low
Water Needs Low, Average
Soil Type Chalk, Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Fragrant, Showy
Native Plants United States, Northeast, Pennsylvania, Rhode Island, Vermont, Connecticut, Delaware, Maine, Massachusetts, Maryland, New Hampshire, New Jersey, New York, Missouri, Nebraska, Minnesota, North Dakota, Ohio, Kansas, South Dakota, Wisconsin, Indiana, Midwest, Illinois, Michigan, Iowa, Pacific Northwest, Oregon, Southeast, Louisiana, Mississippi, North Carolina, South Carolina, Tennessee, Virginia, West Virginia, Alabama, Arkansas, Georgia, Kentucky, Southwest, Texas, Oklahoma, Rocky Mountains, Montana
Tolerance Drought, Deer, Dry Soil, Rocky Soil
Attracts Bees, Butterflies, Hummingbirds
Garden Styles Informal and Cottage, Prairie and Meadow
How Many Plants
Do I Need?
Explore Great Plant Combination Ideas
Asclepias (Milkweed)
Not sure which Asclepias (Milkweed) to pick?
Compare Now

Gardening Ideas

Plant Calculator

How many Asclepias syriaca (Common Milkweed) do I need for my garden?

Input your garden space dimensions

Your Shopping List

Plant Quantity
Asclepias syriaca (Common Milkweed) N/A Buy Plants

Please Login to Proceed

You Have Reached The Free Limit, Please Subscribe to Proceed

Subscribe to Gardenia

To create additional collections, you must be a paid member of Gardenia
  • Add as many plants as you wish
  • Create and save up to 25 garden collections
Become a Member

Plant Added Successfully

You have Reached Your Limit

To add more plants, you must be a paid member of our site Become a Member

Update Your Credit
Card Information

Cancel

Create a New Collection

Sign Up to Our Newsletter

    You have been subscribed successfully

    Join Gardenia.net

    Create a membership account to save your garden designs and to view them on any device.

    Becoming a contributing member of Gardenia is easy and can be done in just a few minutes. If you provide us with your name, email address and the payment of a modest $25 annual membership fee, you will become a full member, enabling you to design and save up to 25 of your garden design ideas.

    Join now and start creating your dream garden!

    Join Gardenia.net

    Create a membership account to save your garden designs and to view them on any device.

    Becoming a contributing member of Gardenia is easy and can be done in just a few minutes. If you provide us with your name, email address and the payment of a modest $25 annual membership fee, you will become a full member, enabling you to design and save up to 25 of your garden design ideas.

    Join now and start creating your dream garden!

    Find your Hardiness Zone

    Find your Heat Zone

    Find your Climate Zone