Part of milkweed  genus Asclepias in dogbane  family Apocynaceae.

Native to 🇨🇦 Canada and 🇺🇸 USA, east of the 🗻︎ Rocky Mountains.

Uses by native peoples
(Ethnobotany database)

Asclepias hosts caterpillars of 13 species
of butterflies and moths, in some areas, including being the only host plant for eggs and larvae of the monarch butterfly  Danaus plexippus.
Poster of monarch butterfly Danaus plexippus lifecycle, larval
host plants, adult nectar plants, and growing info for these plants (.pdf).

Bloom dates and planting info (.pdf page 3) bloom dates (Michigan) (.pdf page 3).

Learn more about whorled milkweed Asclepias verticillata

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