Part of
milkweed genus Asclepias
(⚘❀ state wildflower of Illinois)
in
dogbane family Apocynaceae.
Native to 🇨🇦 🇺🇸 North America.
🗺 Map by county (🇺🇸 USA-48)
(color key).
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. 
Growing milkweeds for
monarch butterflies
Milkweed — It's Not
Just for Monarchs
Uses by butterflies,
planting info
To:
-
see where monarch butterflies are now on their migration, or
-
report your own sightings (🇨🇦 🇺🇸 🇲🇽 in Canada, USA, and México),
please see
monarch butterfly Danaus plexippus > box on "citizen science."
Bloom dates (Michigan). (page 3)