White-Flowered Milkweed Asclepias variegata
Other Common Name(s):
Other plants called White-Flowered Milkweed:
- Phonetic Spelling
- as-KLEE-pee-as vair-ee-ah-GAY-ta
- This plant has low severity poison characteristics.
- See below
- Description
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White milkweed is a native herbaceous perennial wildflower in the Apocynaceae family. The species name describes the bicolored flowers, which are quite showy in masses. The white milkweed thrives in open upland forests and woodland edge habitats, sandy open ground, ravine bottoms, low woods, slopes, ridges, and roadsides.
Plant in full sun to light shade in dry clay, loam, or rocky soil.
This low-maintenance plant reaches a mature size of 1 to 3 feet tall and wide. The most rapid growth and development of this plant occurs during the spring after the danger of hard frost has passed. The leaves are opposite with a smooth margin and pale underside. Small, white flowers dotted with purple in the center form a large, round, showy cluster that blooms in May-July. One or two large wart-like pods with fluffy wind-dispersed seeds mature in the late summer. It does best in dry or rocky woods. This plant is highly resistant to damage from deer.
Consider planting in masses to showcase the flowers that attract butterflies including monarchs and other pollinators like bees. This native is at home in a woodland garden, meadow, or naturalized area.
Fire Risk: This plant has a medium flammability rating.
Insects, Diseases, and Other Plant Problems: No significant disease problems. Most common milkweed pests (aphids, milkweed beetles, Monarch larvae, and milkweed tussock moth larvae) are not problematic, but both large and small milkweed bugs can be very damaging to seed pods.
- See this plant in the following landscape:
- Cultivars / Varieties:
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- Tags:
- Cultivars / Varieties:
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- Tags:
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Attributes:
- Genus:
- Asclepias
- Species:
- variegata
- Family:
- Apocynaceae
- Life Cycle:
- Perennial
- Recommended Propagation Strategy:
- Seed
- Country Or Region Of Origin:
- SE. Canada to Central & E. U.S.A.
- Distribution:
- Eastern North America
- Fire Risk Rating:
- medium flammability
- Wildlife Value:
- The copious amount of nectar in the showy flowers attracts butterflies including Monarch (Danaus plexippus) butterflies, skippers, and possibly moths. Other likely floral visitors include various long-tongued bees and wasps. White milkweed is not an important food plant for Monarch butterfly (Danaus plexippus) caterpillars. The bitter white sap of the foliage contains toxic cardiac glycosides, so it is avoided by mammalian herbivores. Very attractive to honey bees, native bees, and bumble bees.
- Dimensions:
- Height: 0 ft. 8 in. - 3 ft. 0 in.
- Width: 1 ft. 0 in. - 3 ft. 0 in.
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Whole Plant Traits:
- Plant Type:
- Herbaceous Perennial
- Native Plant
- Wildflower
- Woody Plant Leaf Characteristics:
- Deciduous
- Habit/Form:
- Erect
- Maintenance:
- Low
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Cultural Conditions:
- Light:
- Full sun (6 or more hours of direct sunlight a day)
- Partial Shade (Direct sunlight only part of the day, 2-6 hours)
- Soil Texture:
- Sand
- Shallow Rocky
- Soil Drainage:
- Good Drainage
- Moist
- Occasionally Dry
- Available Space To Plant:
- 12 inches-3 feet
- NC Region:
- Coastal
- Mountains
- Piedmont
- USDA Plant Hardiness Zone:
- 3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b
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Fruit:
- Fruit Color:
- Brown/Copper
- Red/Burgundy
- Display/Harvest Time:
- Summer
- Fruit Type:
- Follicle
- Fruit Description:
- Dehiscent seed pods stand erect and are a brown to reddish color. Late summer.
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Flowers:
- Flower Color:
- Purple/Lavender
- White
- Flower Inflorescence:
- Umbel
- Flower Value To Gardener:
- Long-lasting
- Showy
- Flower Bloom Time:
- Spring
- Summer
- Flower Description:
- May-September, long lasting white with some purple at the base of corolla which flex backward. Umbels are erect and spherical with 30 flowers. Flower blooms from May to June.
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Leaves:
- Woody Plant Leaf Characteristics:
- Deciduous
- Leaf Color:
- Green
- Purple/Lavender
- Leaf Type:
- Simple
- Leaf Arrangement:
- Opposite
- Leaf Shape:
- Ovate
- Leaf Margin:
- Entire
- Hairs Present:
- Yes
- Leaf Length:
- 3-6 inches
- Leaf Width:
- 1-3 inches
- Leaf Description:
- Simple, opposite and attachment is petiolate. Leaves are oval, 2–6 in (5-15 cm) long and ½ -3 in (1-7 ½ cm) wide, generally thick with the upper side hairless and dark and the underside a lighter color with hair.
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Stem:
- Stem Color:
- Green
- Purple/Lavender
- Stem Is Aromatic:
- No
- Stem Description:
- Single stems that are thin, narrow and purple-green. Crushing reveals the milky sap typical of most milkweeds.
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Landscape:
- Landscape Location:
- Meadow
- Naturalized Area
- Woodland
- Landscape Theme:
- Butterfly Garden
- Native Garden
- Pollinator Garden
- Design Feature:
- Mass Planting
- Attracts:
- Bees
- Butterflies
- Pollinators
- Specialized Bees
- Resistance To Challenges:
- Deer
- Rabbits
- Problems:
- Problem for Cats
- Problem for Dogs
- Problem for Horses
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Poisonous to Humans:
- Poison Severity:
- Low
- Poison Symptoms:
- Can cause stomach upset, nausea, vomiting, abdominal pain, diarrhea, weakness, lethargy, and confusion if eaten in quantity. Milky sap can cause contact dermatitis and eye irritation.
- Poison Toxic Principle:
- Cardiac glycoside
- Causes Contact Dermatitis:
- Yes
- Poison Part:
- Flowers
- Leaves
- Sap/Juice
- Seeds
- Stems