Correction: Shipping from Beaver Creek is not limited to spring.
Yes, Alplains is a superb source for seeds of North American alpines and others.
I've been ordering seeds from the various Czech seed collectors -fabulous selections - as well as from NARGS and SRGC (Scottish Rock Garden Society) and Alplains.
Here's some info from an excellent source of info - the North American Rock Garden Society (NARGS):
https://www.nargs.org/forum/se...