Pasque flower is a tundra plant that grows in the northwestern U.S. all the way to northern Alaska. In fact, it has been the state flower of South Dakota since 1903, where it grows wild. Pasque flowers were used as a medicine by native Americans for centuries.
The plants propagate by reseeding themselves. Every spring I find mini-Pasque flowers growing in locations that I didn't plant it, but by no means is it invasive. The new plants are random and few. It grows about 8-12" tall in my yard. Pasque flowers are ideal for sunny rock gardens, crevice gardens, and any spot that is very well drained. I got my original plant from my friend Sally many years ago and continue to enjoy it every April and May.