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Feay’s Milkweed

Asclepias feayi Chapm. ex A. Gray

A Florida endemic of pine flatwoods and sandhill with hair-fine leaves and delicate white flowers flushed pink, so slender that the plant almost disappears into the wiregrass.

Also called Florida Milkweed.

Feay’s Milkweed (Asclepias feayi). Asclepias feayi 1a
jimduggan24 · CC BY 2.0 · Wikimedia Commons
Height
8 in–2 ft
Spread
8 in–1.3 ft
Flowers
white, pink
Bloom
April to September
Light
Full sun
Soil moisture
Dry
USDA zones
8–10
Leaves
Opposite, threadlike
Sap
Milky latex
Roots
Deep taproot, resents transplanting
Stratification
None needed
Range
1 state

When it flowers

Feay’s Milkweed blooms April to September, peaking in May and June.

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How to identify it

  • Extremely fine, thread-like opposite leaves.
  • Small white flowers with a pink or lavender tinge, in airy clusters.
  • Florida pine flatwoods, sandhill and dry prairie, statewide except the far west.
Diagram of Feay’s Milkweed showing opposite threadlike leaves and white flower clusters
Diagnostic plate Drawn from this species' own characters: opposite leaves, threadlike in shape, clump-forming, with white to pink umbels. Sap is milky.

Ecology and wildlife value

A fire-maintained flatwoods species and a genuine Florida endemic, used by monarchs and queens through the long southern season.

Growing feay’s milkweed

Occasionally offered by Florida native nurseries. Needs sand, sun and no irrigation. Fresh seed germinates without chilling.

Seed needs no cold stratification and can be sown fresh. Deep taproot, resents transplanting. See how to plant milkweed seed for the full method.

Cautions

Standard milkweed cautions. More on milkweed toxicity.

Where feay’s milkweed grows

Recorded in 1 state: Florida.

Distribution is generalized to state level. For county-level maps see USDA PLANTS and BONAP.

References and further reading

Names, ranges and conservation status here are drawn from the databases below. Where those disagree with a regional flora, trust the flora.

  1. Plants of the World Online 94274-1. Royal Botanic Gardens, Kew. Accepted name, authorship and global distribution.
  2. GBIF 3170275. Global Biodiversity Information Facility. Aggregated occurrence records.
  3. iNaturalist 143039. Community observations, photographs and phenology.
  4. Wikipedia. General-audience article on this species.
  5. BONAP county distribution map. Biota of North America Program. County-level range map.
  6. NatureServe Explorer. Conservation status ranks at global and state level.
  7. World Flora Online. Nomenclature and synonymy.
  8. Woodson, R. E. (1954). The North American species of Asclepias L.. Annals of the Missouri Botanical Garden 41(1): 1–211. The monograph the modern taxonomy of the genus still rests on. View
  9. Flora of North America Editorial Committee (eds.) (2026). Flora of North America North of Mexico. Oxford University Press, New York and Oxford. Accepted names, keys and descriptions for the North American flora. View
  10. Royal Botanic Gardens, Kew (2026). Plants of the World Online. Facilitated by the Royal Botanic Gardens, Kew. Nomenclature and global distribution, keyed to IPNI name identifiers. View
  11. Kartesz, J. T. (Biota of North America Program) (2026). North American Plant Atlas. BONAP, Chapel Hill, North Carolina. County-level distribution maps, the basis for the ranges generalized here. View
  12. USDA, NRCS (2026). The PLANTS Database. National Plant Data Team, Greensboro, North Carolina. State-level distribution, wetland status and nomenclature. View
  13. Agrawal, A. A. (2017). Monarchs and Milkweed: A Migrating Butterfly, a Poisonous Plant, and Their Remarkable Story of Coevolution. Princeton University Press. The standard general account of the milkweed and monarch relationship. View

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APA Milkweed USA. (2026). Feay’s Milkweed (Asclepias feayi). Retrieved DATE, from https://milkweedusa.com/species/feays-milkweed/
MLA "Feay’s Milkweed (Asclepias feayi)." Milkweed USA, 2026, https://milkweedusa.com/species/feays-milkweed/. Accessed DATE.
Chicago Milkweed USA. "Feay’s Milkweed (Asclepias feayi)." Last modified 2026-08-01. Accessed DATE. https://milkweedusa.com/species/feays-milkweed/.
BibTeX @misc{milkweedusa_speciesfeaysmilkweed, title = {Feay’s Milkweed (Asclepias feayi)}, author = {{Milkweed USA}}, year = {2026}, url = {https://milkweedusa.com/species/feays-milkweed/}, note = {Accessed DATE} }