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Narrowleaf Milkweed Asclepias fascicularis


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Narrowleaf Milkweed
© Lady Bird Johnson Wildflower Center

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Family: Asclepiadaceae, Milkweed view all from this family

Description A 1-2 1/2 ft. perennial with several erect stems and narrow, whorled leaves. Several 4-5 in. wide flower clusters occur from the upper leaf axils. Individual flowers are greenish-white, often tinged with purple. The subsequent milkweed pod is smooth and slender.

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.

Flower June - September.

Flower June - September

Habitat Occurs in a variety of dry to moist places below 7000 ft.

Range Ne. Washington and Idaho, south to Baja California and n. Arizona.

Comments Easy to grow and quite drought tolerant.

Exposure Preference Sun.

Native Distribution N.e. Washington & Idaho, s. to Baja California & n. Arizona

Site Preference Occurs in a variety of dry to moist places below 7000 ft.; uncommon on the desert

Soil Preference Various dry to moist soils.