Antelope-horns Milkweed
Curved seed pods suggest antelope horns, while greenish flower balls feed early-season pollinators across dry southern prairie.
Artwork inspired by Woody Crumbo
Milky latex and cardiac glycosides discourage many herbivores, but monarch caterpillars can use the plant as a host. Hairlike pollinia can catch an insect’s leg, making successful pollination a precise mechanical event.
Never dig a root or handle the eyes after touching latex. Give Antelope-horns Milkweed room to remain undisturbed. Photograph low milkweed with narrow wavy leaves and spherical green-and-purple flower clusters with its surroundings, and leave nests, dens, host plants, bark, and flowers as found.
- Best clue
- Low milkweed with narrow wavy leaves and spherical green-and-purple flower clusters
- Habitat
- dry prairie, rocky slopes, roadsides, and open rangeland
- Regional status
- Native regional species
Quick guide
- Look
- Green-purple flower globe
- Confirm
- Narrow wavy leaves
Confirm Antelope-horns Milkweed in habitat
- Growth form
- Look for low milkweed with narrow wavy leaves and spherical green-and-purple flower clusters when identifying Antelope-horns Milkweed.
- Leaf or stem
- Check curved horn-like pods together with narrow wavy leaves before accepting the identification.
- Habitat test
- Use dry prairie, rocky slopes, roadsides, and open rangeland in Oklahoma, United States as habitat context and check April–June.
- Document lightly
- Photograph low milkweed with narrow wavy leaves and spherical green-and-purple flower clusters together with the surrounding habitat.
Good to know
Milkweed pollen is packaged into structures called pollinia that can catch an insect’s leg, turning pollination into a remarkably precise mechanical transfer.
Notice these
- Green-purple flower globe
- Narrow wavy leaves
- Curved horn-like pods
- Milky latex