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Mexican whorled milkweed

Asclepias fascicularis

Also called Narrow-leaf milkweed, Mexican Milkweed, Narrow Leaved Milkweed, Narrowleaf Milkweed

Mexican whorled milkweed
Photo: Eric Hunt, CC BY-SA 3.0

Asclepias fascicularis is a perennial milkweed from the western US and Baja California, grown for its narrow whorled leaves and clustered flowers. It is drought tolerant and thrives in full sun with very well-drained soil.

Family
Apocynaceae (Dogbane family)
Grows as
Perennial
Light
Full sun
Water
Water deeply but infrequently, letting the soil dry out fully between waterings.
Soil
Sandy or gritty, very well-drained soil.
Temperature
10–35 °C; hardy to about -10 °C once established
How easy
Easy
Safety
Toxic: All parts contain cardiac glycosides, which can cause nausea, vomiting, and heart irregularities if eaten.
Native range
W. U.S.A. to Mexico (N. Baja California)
Climate
temperate

About

Asclepias fascicularis is a species of milkweed known by the common names narrowleaf milkweed and Mexican whorled milkweed. It is a perennial herb that grows in a variety of habitats.

Where it grows

The plant is a common perennial in the Western United States and Baja California. It is found in numerous habitats, including deserts, chaparral and woodlands, and montane locales below 7,000 feet (2,100 m).

Other Asclepias plants

Cartwheels · Whitestem milkweed · Spider milkweed · California milkweed · Heartleaf milkweed · Bloodflower · Curtiss' milkweed · Woollypod milkweed · Desert milkweed · Poke milkweed · Florida milkweed · Swamp milkweed

Text excerpted from the Wikipedia article Asclepias fascicularis by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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