Asclepias eriocarpaBenth.

woollypod milkweed

WFO wfo-0000551301 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Asclepias eriocarpa, photographed by Amthinkia
fig. a Amthinkia, CC0 1.0 / 2022-06-07 / obs. 204262326
Asclepias eriocarpa, photographed by Millie Basden
fig. b Millie Basden, CC BY 4.0 / obs. 204726138
Asclepias eriocarpa, photographed by Kristen Francis
fig. c Kristen Francis, CC0 1.0 / obs. 204792932
Asclepias eriocarpa, photographed by Steve Addison
fig. d Steve Addison, CC BY 4.0 / obs. 204174122
Asclepias eriocarpa, photographed by Vasily Reinkymov
fig. e Vasily Reinkymov, CC0 1.0 / obs. 201737423
Asclepias eriocarpa, photographed by Kristen Francis
fig. f Kristen Francis, CC0 1.0 / obs. 204792748
Asclepias eriocarpa, photographed by Amy
fig. g Amy, CC BY 4.0 / obs. 199781198
Asclepias eriocarpa, photographed by Kristen Nelson
fig. h Kristen Nelson, CC0 1.0 / obs. 202601784

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

Flowering n = 1,097 observations

Peak flowering in Jul, from 1,097 community-annotated observations worldwide. This is a global aggregate, not a forecast for your garden: the same species flowers on different dates in different hemispheres, and citizen-science records cluster near cities, at weekends, and in spring. Where a species has fewer than 30 annotated records we do not draw this chart at all.

Also published as 3 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

  • Asclepias eriocarpa var. microcarpa Munz & I.M.Johnst.
  • Asclepias fremontii Torr.
  • Asclepias kotolo Eastw.

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.

We publish what we can source and we say so when we cannot. This page has no care advice, no toxicity claim and no native range, because we do not yet have those from a source we can cite.