En Espa—ol

NPIN: Native Plant Database

Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.

Search native plant database:
See a list of all Plants

Asclepias humistrata (Pinewoods milkweed)
Cressler, Alan

Asclepias humistrata

Asclepias humistrata Walter

Pinewoods milkweed, Sandhill milkweed

Asclepiadaceae (Milkweed Family)


USDA Symbol: ashu3

USDA Native Status: L48 (N)

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 perennialís prominent features. Leaves are distinctly purple-veined and the white flowers sometimes have a touch of lavender.


Plant Characteristics

Duration: Perennial
Habit: Herb
Root Type: Tap
Leaf Retention: Evergreen
Leaf Arrangement: Opposite
Leaf Complexity: Simple
Leaf Venation: Pinnate
Breeding System: Flowers Bisexual
Inflorescence: Umbel
Leaf: Purplish green
Size Class: 1-3 ft.

Bloom Information

Bloom Color: White
Bloom Time: Mar , Apr , May , Jun


USA: 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 Conditions

Water Use: Medium
Light Requirement: Sun
Soil Moisture: Dry
Soil Description: Dry, sandy soils.
Conditions Comments: This flower tolerates very hot, dry conditions.


Warning: 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
Attracts: Butterflies

Value to Beneficial Insects

Special 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.


Description: 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

Additional resources

USDA: Find Asclepias humistrata in USDA Plants
FNA: Find Asclepias humistrata in the Flora of North America (if available)
Google: Search Google for Asclepias humistrata


Record Modified: 2014-06-26
Research By: TWC Staff

Go back

© 2014 Lady Bird Johnson Wildflower Center