Meadow blazingstar has a corm -- a bulb-like mass -- that transplants easily when the plant is dormant. I find it takes about 3 years to get a mature plant with many stalks, but after that it declines quickly and may last only 4-5 years in the landscape. I'd be interested to hear from those who have observed it in the wild and how it performs over time.
The Deep Middle
Gardening & writing in the prairie echo