Asclepias speciosa (Showy Milkweed)
Showy Milkweed, American Silkweed, Jewelweed, Silken Cissy, Silkweed, Swallow Wort, White Indian Hemp
Asclepias speciosa (Showy Milkweed) is an erect, clump-forming perennial prized for its brilliant spherical clusters of fragrant, pinkish-white, starry flowers, which bloom from late spring to early summer. Flowers are a great source of nectar for butterflies, hummingbirds, bees, and other beneficial insects. The flowers occur on stalks from the leaf axils and at the top of upright stems clad with velvety, large, oval, blue-green leaves. 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. 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 in sturdy, upright clumps up to 2-4 ft. tall (60-120 cm) and 12-18 in. wide (30-45 cm). 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.
- Plants have deep taproots and are best left undisturbed once established.
- Propagate by root cuttings in fall or early spring. Seeds may be sown outside in late fall or the following spring.
- Toxic to dogs, toxic to cats, toxic to horses.
- Native to western North America
Milkweed: How To Grow and Care with Success
By providing the right growing conditions, you can enjoy healthy and vibrant milkweed in your garden while supporting pollinator populations.Read More
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Requirements
Hardiness | 3
– 9 |
---|---|
Climate Zones | 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 |
Plant Type | Perennials |
Plant Family | Asclepias |
Exposure | Full Sun |
Season of Interest |
Spring (Late) Summer (Early) |
Height | 2' – 4' (60cm – 120cm) |
Spread | 1' – 2' (30cm – 60cm) |
Spacing | 18" (45cm) |
Water Needs | Average |
Maintenance | Low |
Soil Type | Chalk, Clay, Loam, Sand |
Soil pH | Acid, Alkaline, Neutral |
Soil Drainage | Well-Drained |
Characteristics | Fragrant, Showy |
Native Plants | United States, California, Midwest, Illinois, Iowa, Kansas, Michigan, Minnesota, Nebraska, North Dakota, South Dakota, Wisconsin, Pacific Northwest, Idaho, Oregon, Washington, Rocky Mountains, Colorado, Montana, Utah, Wyoming, Southwest, Nevada, Arizona, New Mexico, Oklahoma, Texas |
Tolerance | Deer, Drought |
Attracts | Bees, Butterflies, Hummingbirds |
Garden Uses | Beds and Borders |
Garden Styles | Informal and Cottage, Prairie and Meadow |
Shutterstock, (c) Gerhard Bock, SucculentsandMore.com
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.
Requirements
Hardiness | 3
– 9 |
---|---|
Climate Zones | 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 |
Plant Type | Perennials |
Plant Family | Asclepias |
Exposure | Full Sun |
Season of Interest |
Spring (Late) Summer (Early) |
Height | 2' – 4' (60cm – 120cm) |
Spread | 1' – 2' (30cm – 60cm) |
Spacing | 18" (45cm) |
Water Needs | Average |
Maintenance | Low |
Soil Type | Chalk, Clay, Loam, Sand |
Soil pH | Acid, Alkaline, Neutral |
Soil Drainage | Well-Drained |
Characteristics | Fragrant, Showy |
Native Plants | United States, California, Midwest, Illinois, Iowa, Kansas, Michigan, Minnesota, Nebraska, North Dakota, South Dakota, Wisconsin, Pacific Northwest, Idaho, Oregon, Washington, Rocky Mountains, Colorado, Montana, Utah, Wyoming, Southwest, Nevada, Arizona, New Mexico, Oklahoma, Texas |
Tolerance | Deer, Drought |
Attracts | Bees, Butterflies, Hummingbirds |
Garden Uses | Beds and Borders |
Garden Styles | Informal and Cottage, Prairie and Meadow |