Thank you Sharon. Our summers are cool, the warmest months are June, July and August with temps. 60° - 70°F. May and September can be nice with temperatures 50° - 60°F, some times higher. April is our spring month, but can be really cold some times, and October the same but it usually does not snow until the middle of November.
It is OK to mail seeds, but with plants it is complicated, especially if they have soil on the roots. I would love it if you would send some seeds later this year. I´m not sure about cuttings, but I know that people bring cuttings with them from abroad. Mail from the U.S. usually takes a week, some times 6 days.to get here. I would really like to try Wisteria I have a small but sheltered garden which usually is warmer in summer than most other places. I am going to plant rooted cuttings of Clematis alpina this summer. Clematis alpina is the only clematis I have seen here yet and it seems happy here.