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Asclepias cordifolia (Heartleaf Milkweed)

Heartleaf Milkweed, Heart Leaf Milkweed, Purple Milkweed, Gomphocarpus cordifolius

Asclepias cordifolia, Heartleaf Milkweed, Heart Leaf Milkweed, Purple Milkweed, Gomphocarpus cordifolius
Asclepias cordifolia, Heartleaf Milkweed, Heart Leaf Milkweed, Purple Milkweed, Gomphocarpus cordifolius
Asclepias cordifolia, Heartleaf Milkweed, Heart Leaf Milkweed, Purple Milkweed, Gomphocarpus cordifolius

Asclepias cordifolia (Heartleaf Milkweed) is a perennial wildflower prized for its spreading umbels of dark pink to dark purple flowers produced from late spring to mid-summer. Borne on individual pedicels, the flowers weep downward, resembling small fireworks. They attract pollinators and their nectar supports beneficial insects that are natural predators of many crop pests. They are followed by beautiful elongated seed pods. The large opposite leaves are heart-shaped and their waxy coating gives them a frosted appearance. Monarch butterfly caterpillars eat the leaves, which contain alkaloids that cause the butterfly to be unpalatable to predators. During the fall, each seed pod splits open to release many flat seeds with silky hairs. Native to the western United States, Heartleaf Milkweed grows in dry, rocky areas in woodlands, chaparral, and evergreen forest. Heartleaf Milkweed blooms in its second year. It is a great choice for the butterfly 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 1-2 ft. tall (30-60 cm).
  • Thrives in full sun to partial shade in dry to medium, well-drained soils. Grows well in rocky soil.
  • Low maintenance, this perennial plant is generally pest and disease free. Deer resistant.
  • Perfect for cottage gardens, butterfly gardens, and prairies or naturalized areas.
  • Propagated by seed (no treatment).
  • Toxic to dogs, toxic to cats, toxic to horses.
  • Native to California, Nevada, and Oregon.

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 7 - 10
Plant Type Perennials
Plant Family Apocynaceae
Genus Asclepias
Common names Milkweed, Purple Milkweed
Exposure Full Sun, Partial Sun
Season of Interest Spring (Late)
Summer (Early, Mid)
Height 1' - 2'
(30cm - 60cm)
Maintenance Low
Water Needs Low
Soil Type Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Showy
Native Plants United States, Pacific Northwest, Southwest, California, Oregon, Nevada
Tolerance Deer, Rocky Soil
Attracts Birds, Butterflies
Garden Uses Beds And Borders
Garden Styles Prairie and Meadow, Informal and Cottage
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Alternative Plants to Consider

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

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.
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Requirements

Hardiness 7 - 10
Plant Type Perennials
Plant Family Apocynaceae
Genus Asclepias
Common names Milkweed, Purple Milkweed
Exposure Full Sun, Partial Sun
Season of Interest Spring (Late)
Summer (Early, Mid)
Height 1' - 2'
(30cm - 60cm)
Maintenance Low
Water Needs Low
Soil Type Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Showy
Native Plants United States, Pacific Northwest, Southwest, California, Oregon, Nevada
Tolerance Deer, Rocky Soil
Attracts Birds, Butterflies
Garden Uses Beds And Borders
Garden Styles Prairie and Meadow, Informal and Cottage
How Many Plants
Do I Need?
Explore Great Plant Combination Ideas
Asclepias (Milkweed)
Not sure which Asclepias (Milkweed) to pick?
Compare Now

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