It is mainly the one I have seen in the mountains of NC. I grew a few from seed but gave them away. In the wild it attracts pollinators and is lovely when it blooms...doesn't get as tall as others.

Why did you give them away -- didn't like them? Or some other reason?

"I grow things from seeds to donate to the local native plant group sale each year."

Wow, that's terrific!

They are just like the ovalifolia, in that they take a couple/few years to get going, and they can dissappear and return like ovalifolia, where they enter into a state of senescence. I have Polk Milkweed plants that are going on year 3, and they still haven't bloomed yet. I'm moist storing exaltata seeds in the fridge, and I'm going to start them indoors, under lights, to give them a head start. It's a beautiful milkweed species, I can't wait to see mine when they are well established. Definitely worth the trouble. I hear they can also hybridize easily with other Asclepias species.

https://www.growmilkweedplants.com/michigan.html

I had some milkweed plants in my previous yard, in a very shady area, that I decided must be Poke milkweed. They didn’t bloom for several years, but attracted Monarch females to lay eggs. Then my neighbor cut down a large tree, so the area was less shaded, and the plants bloomed. The blossoms had the drooping look that I associate with A. exalta, so I have been calling them Poke milkweed, though always wondering. I saved seed, and wintersowed some this year. Hopefully the seeds are still viable.

Good luck. I sold my house in the mt. last November, so no more great seed collecting times up there. Now I will have to depend on my own yard. Ha, ha!

I was able to get some of the potted size on order from Prairie Moon this year. Yay!