Thank you for starting this thread!
I think that is a pretty aster. well I am zone 6 so they probably would perform similarly for me here. It would be nice to have something that reseeded and so would always be in the garden and yet at the same time not reseed to the point it was invasive. I guess that is where deadheading would come in. Most of the asters I've seen advertised as blue though turned out to be purple, and I think the blue would be pretty. I have a notion that just like the mums, the asters would do better planted in the garden in the spring, not fall, so they have time to establish before winter. I think that is true of coneflowers as well. I guess in an area with more mild winters that may not be as much of an issue.
