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Zizotes Milkweed (Asclepias oenotheroides)

Host Plant: Monarch Butterfly (Danaus plexippus)

Nectar Plant: Monarchs, and other butterflies and insects

Flower Color: white, greenish-white to yellow

Growth Habit: herbaceous perennial that grows 1 to 2 feet tall

Range in North America: South-central and southwestern United States

Exposure: Full sun and is not tolerant of the sun

Hardiness: Zones 7-9

Soil Requirements: mesic soil that is well-drained

Information about Zizotes Milkweed (Asclepias oenotheroides)

Side-cluster Milkweed, Longhorn Milkweed, Primrose Milkweed, and Lindheimer’s Milkweed

Zizotes milkweed (Asclepias oenotheroides), a member of the Apocynaceae (Dogbane Family), is a herbaceous perennial that grows from 1 to 2 feet tall and has white, greenish-white to yellow flowers that bloom in the from the spring through fall (roughly March to December, depending on location). The leaves are simple, opposite to subopposite, crenate, ovate in shape and are 1-8 inches in length and 0.5-2.5 inches wide. This plant grows in zones 7-9 and likes open areas with full sun that have dry soil.  More information can be found about this species on this blog post.


Monarch Butterfly (Danaus plexippus)

U.S. Fish and Wildlife Service, Public domain, via Wikimedia Commons

Bumblebees use this plant as a nectar source.

Range of Zizotes Milkweed in the United States and Canada


Patrick Alexander from Las Cruces, NM, CC0, via Wikimedia Commons

Zizotes Milkweed is found on dry mesas, creekbeds, calcareous areas, dunes, roadsides, grasslands, and disturbed areas.

The genus name, Asclepias, is the Greek name for the God of Medicine.



Vascular Plants of the Gila Wilderness (mostly images)

Wildflowers of New Mexico



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