I have come to love Agastaches so much that I am going to plant as many varieties as I can (this year have 5 counting A rupestris sunset). Though in zone 6a we live in an area where our back yard where the Agastaches are is pretty well protected from winds and with adequate soil amendment and crushed gravel mulch am hoping some if not all survive. If they don't, I will just buy them each year as I do my favorite Salvias that are not hardy in my zone.
@Marilyn you have had multiple Agastache species survive your zone 6a winters, haven't you? Firebird is one I definitely want. A rupestris is one that I do like a lot. I collected seeds from mine already and sowed a few in a pot- got several seedlings but one is growing faster and bigger than the others. If it gets big enough I will move it to its own container or possibly in the Agastache bed. I also would tend to let any seedlings that appear in the bed grow to see what they turn out like!!
