The Liatris I'm thinking of is more of a rootstock (like Sanguinaria) so checking with a perennials grower could be a good start. Or a nursery that specialises in native plants.

I purchased some tubers through Michigan bulb this spring and they were of good size--larger than the ones I had purchased at a local big box store. I have really mixed results from Michigan bulb--their quality varies a lot from product to product.

i found walmart had some big ones this spring, they have bloomed well for me buy early when they first put them out 5.00 for 10

Thanks for the tips.
Renee

Once you get one mature plant, you'll get new ones every year. I have literally hundreds of seedlings that bloom in one or two years and keep increasing in size, as well as dropping easily germinating seeds. If you want first season "bulbs," I could dig some up in the fall.

Martha