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Ruth Milkweed

Asclepias sanjuanensis

Also called Ruth's Milkweed

Ruth Milkweed
Photo: Patrick Alexander, CC0

Ruth Milkweed is a native perennial milkweed of the Four Corners region, found only in San Juan County, New Mexico, growing in sandy soils in pinyon-juniper woodland and grassland. It is best grown in full sun in well-drained sandy soil, keeping it dry.

Family
Apocynaceae (Dogbane family)
Grows as
Perennial
Light
Full sun
Water
Water sparingly and let the soil dry out between waterings; it is adapted to arid conditions.
Soil
Sandy or sandy loam, very well drained.
Temperature
Hardy in cold winters typical of its high-elevation native range (about 5,000 to 6,200 ft); protect pots from hard frost.
How easy
Moderate
Native range
SE. Utah to NW. New Mexico
Climate
subtropical

About

Asclepias sanjuanensis, the San Juan milkweed, is a species of milkweed native to northwestern New Mexico. This species is restricted to the Four Corners area and is only present in San Juan County in New Mexico.

Where it grows

Asclepias sanjuanensis is endemic to the Four Corners Region in San Juan County, NM. Habitat comprises mostly in sandy or sandy loam soils in pinyon-juniper woodlands and Great Basin grassland communities. Known populations occur from 5,000 to 6,200 ft. elevation. Often in disturbed sites.

Other Asclepias plants

Cartwheels · Cartwheels · Whitestem milkweed · Asclepias alpestris · Asclepias amabilis · Asclepias ameliae · Clasping milkweed · Arizona milkweed · Asclepias apocynifolia · Sand milkweed · Spider milkweed · Asclepias atroviolacea

Text excerpted from the Wikipedia article Asclepias sanjuanensis 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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