Name: Sandy B. Ford River Twp, Michigan UP (Zone 4b) (Zone 4b-maybe 5a)
I've found them quite easy to grow; I'm not sure how the wild temperature swings that you seem to get will affect them, though, Johannian . (Plant earlier rather than later - they don't mind cool soil.)
“Think occasionally of the suffering of which you spare yourself the sight." ~ Albert Schweitzer C/F temp conversion