Also called/being rebranded butterfly flower.  Doug Tallamy is trying to rebrand them monarch's delight.

Part of milkweed  genus Asclepias (whose blossom is the ⚘❀ state wildflower of Illinois) in dogbane  family Apocynaceae.

Native to North America.   🌎︎ Map by county (🇺🇸 USA-48) (colors).

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.  Adobe Acrobat Reader file
Growing milkweeds for
monarch butterflies
  Adobe Acrobat Reader file
Milkweed—It's Not
Just for Monarchs
Uses by butterflies,
planting info
  Uses by 🐝︎ bees,
planting info  Adobe Acrobat Reader file

Use in a sidewalk strip garden or mailbox garden, bloom dates, height, light, moisture, etc. (Pennsylvania).  Adobe Acrobat Reader file (pages 17, 23, 24, 27 and 41)   Wildflowers of West Michigan  Adobe Acrobat Reader file (page 13) Bloom dates (Michigan).  Adobe Acrobat Reader file (page 3) Bloom dates in temperate prairie regions  Adobe Acrobat Reader file (page 17)   Bloom dates (NE Illinois).  Adobe Acrobat Reader file  (🔒︎ Wild Ones members only) Bloom dates and planting info.  Adobe Acrobat Reader file (page 3)  (🔒︎ Wild Ones members only)

Learn more about butterfly milkweed Asclepias tuberosa

Discover Life Encyclopedia of Life Google Google images Michigan Flora Minnesota Wildflowers Missouri Botanical Garden Missouri Plants USDA PLANTS db USFS Wikipedia