With the caveat that these are growing in the great basin where winters are almost as dry as the summers. Still, these have survived -9 F. I would be embarrassed to say how long the small ones have been in the pots-so, tough. The potted ones are free to anyone who offers a good home.

neo-mexicana

americana

americana variegata

noid but would like to be guadalajarama because kool name. probably not though.