I plan to grow them in the ground eventually. It's easy enough to winter in a pot if you bury the pot in the ground as long as the pot has as drainage. I can also test out different growing sites and see where they do well without putting them through the stress of transplant.
I've lost a lot of baby perennials by transplanting out too soon. They get buried in compost and die, or they don't really like where I put them and they die, or I forget what they look like the next year and weed them out and they die. Or they just ... die.
These aren't wintersown, but I have found with wintersown in particular I have more success if I leave it to the second year of maturity to transplant. Plants that are a bit bigger are harder to lose and look like something.
These grow from a tuber and it will take some time for the tuber to grow. There is a danger that they are too crowded--I might dig one up to see the state of the roots in a couple of months.
