Asclepias oenotheroides Cham. & Schltdl.
Zizotes milkweed, Hierba de Zizotes, Longhorn milkweed, Side-cluster milkweed, Primrose milkweed, Lindheimer's milkweed
Asclepiadaceae (Milkweed Family)
Synonym(s): Asclepias brevicornu
USDA Symbol: asoe
From the Image Gallery
Plant CharacteristicsDuration: Perennial
Root Type: Tap
Leaf Retention: Deciduous
Size Class: 0-1 ft.
Bloom InformationBloom Color: Green
Bloom Time: Mar , Apr , May , Jun , Jul , Aug , Sep
DistributionUSA: CO , LA , NM , OK , TX
Native Habitat: Sandy or gravelly ground, prairies, ditches and fields. Can be poisonous to livestock. Prefers sandy, dry soil.
Growing ConditionsLight Requirement: Sun
Conditions Comments: This member of the Milkweed family loves full sun and tolerates sandy, dry soils. Great for butterfly gardens. Purple tinge comes to upper leaves in full sun.
BenefitUse Wildlife: A well-documented larval host for Monarch butterflies.
Warning: All plants in the genus Asclepias are probably somewhat toxic, some fatally so, to both humans and other animals. The sap of some, including Asclepias oenotheroides, causes skin irritation in humans. The word zizotes in this plants common name is a Spanish term meaning skin sores. 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
Fragrant Flowers: yes
Larval Host: Monarch butterfly
Nectar Source: yes
Deer Resistant: High
Value to Beneficial InsectsSpecial 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.
From the National Organizations DirectoryAccording to the species list provided by Affiliate Organizations, this plant is on display at the following locations:
Lady Bird Johnson Wildflower Center - Austin, TX
Sibley Nature Center - Midland, TX
Brackenridge Field Laboratory - Austin, TX
Stengl Biological Research Station - Smithville, TX
NPSOT - Austin Chapter - Austin, TX
National Butterfly Center - Mission, TX
NPSOT - Williamson County Chapter - Georgetown, TX
Herbarium Specimen(s)NPSOT 0182 Collected Oct. 8, 1991 in Bexar County by Lottie Millsaps
NPSOT 0126 Collected Sept. 7, 1991 in Bexar County by Lottie Millsaps
NPSOT 0259 Collected Aug. 16, 1992 in Comal County by Mary Beth White
Wildflower Center Seed BankLBJWC-500 Collected 2007-06-18 in Travis County by Lady Bird Johnson Wildflower Center
BibliographyBibref 286 - Wildflowers of the Texas Hill Country (1989) Enquist, M.
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Recommended Species Lists
Find native plant species by state. Each list contains commercially available species suitable for gardens and planned landscapes. Once you have selected a collection, you can browse the collection or search within it using the combination search.View Recommended Species page
Additional resourcesUSDA: Find Asclepias oenotheroides in USDA Plants
FNA: Find Asclepias oenotheroides in the Flora of North America (if available)
Google: Search Google for Asclepias oenotheroides
MetadataRecord Modified: 2009-05-04
Research By: NPC, RLU, GDG