Pinewoods milkweed, Sandhill milkweed
USDA Symbol: ASHU3
USDA Native Status:
The smooth, stout, unbranched stems of this milkweed generally occur in spreading clusters which ascend 1-1 1/2 ft. The spreading habit; 5-10 pairs of broad, clasping leaves; tan-colored flowers buds; a nearly white crown; and erect fruits on drooping pedicels are the perennials prominent features. Leaves are distinctly purple-veined and the white flowers sometimes have a touch of lavender.
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Plant CharacteristicsDuration: Perennial
Root Type: Tap
Leaf Retention: Evergreen
Leaf Arrangement: Opposite
Leaf Complexity: Simple
Leaf Venation: Pinnate
Breeding System: Flowers Bisexual
Leaf: Purplish green
Size Class: 1-3 ft.
Bloom InformationBloom Color: White
Bloom Time: Mar , Apr , May , Jun
DistributionUSA: AL , FL , GA , LA , MS , NC , SC
Native Distribution: S.e. LA to FL, n. to NC
Native Habitat: Sand hills; dry, oak woods; pine barrens
Growing ConditionsWater Use: Medium
Light Requirement: Sun
Soil Moisture: Dry
Soil Description: Dry, sandy soils.
Conditions Comments: This flower tolerates very hot, dry conditions.
BenefitWarning: All plants in the genus Asclepias are probably somewhat toxic, some fatally so, to both humans and animals. The sap of some causes skin irritation in humans. Sensitivity to a toxin varies with a personís age, weight, physical condition, and individual susceptibility. Children are most vulnerable because of their curiosity and small size. Toxicity can vary in a plant according to season, the plantís different parts, and its stage of growth; and plants can absorb toxic substances, such as herbicides, pesticides, and pollutants from the water, air, and soil.
Conspicuous Flowers: yes
Value to Beneficial InsectsSpecial Value to Native Bees
Special Value to Bumble Bees
Special Value to Honey Bees
Supports Conservation Biological Control
This information was provided by the Pollinator Program at The Xerces Society for Invertebrate Conservation.
PropagationDescription: Root cuttings can be taken in fall or early spring. Seeds may be sown outside in late fall or the following spring. Germination of spring-planted seeds is enhanced by moist stratification.
Seed Collection: Not Available
Seed Treatment: Stratify 3 months at 40 degrees.
Commercially Avail: yes
Recommended Species Lists
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Additional resourcesUSDA: Find Asclepias humistrata in USDA Plants
FNA: Find Asclepias humistrata in the Flora of North America (if available)
Google: Search Google for Asclepias humistrata
MetadataRecord Modified: 2007-01-01
Research By: TWC Staff