This lush set of blooms was met in Raccoon Creek State Park in southwestern Pennsylvania. Our garden in Eatonton, Georgia now has them. We’ve had good success growing new plants from our own seed.
Without checking the internet, I think that these Butterflyweed milkweeds are native to most states east of the Mississippi River. I found them lush and strong in Lynx Prairie Reserve in southern Ohio and just as beautiful in that 100+ acre meadow at Ft. Indiantown Gap in central Pennsylvania. On them at Lynx Prairie were Edwards Hairstreaks, Coral Hairstreaks, Monarchs, Great Spangled Fritillaries and more. On them at Ft. Indiantown Gap were Regal Fritillaries (Wow!!), Monarchs, Coral Hairstreaks and more.
Search for them too early in June, and you won’t find their flowers in bloom. Search for them too late in July, and again, too late for blooms.
They are super terrific flowers for attracting butterflies, but . . . they only attract butterflies when those flowers are mature, lush and my own experience is that they mostly attract butterflies and moths and wasps from about 9:45 AM to 10:40 AM..
You can beg, cajole or threaten whatever, but that’ll not help. They bloom when they bloom, and when they are ripe and ready, they are easy to spot and fantastic! beacons for butterflies and more. They do occasionally support Monarch caterpillars, but seem to be a milkweed of last resort.
And, they do great in most gardens, preferring sunny, moist spots.