Well, as someone even further north of you (Indianapolis), I've not found a single variety that CAN'T be grown. I think at this years' Open Fields, the few new ones will put me over the 400 variety mark. That pales in comparison to Susan Byers (Bloomington, IN) who I'm sure tops 1,000. Come on up in late September & help yourself :-) It takes just a little more planning, some earlier starting, and a few tricks of the trade. You've already found one in black plastic. Another is to make sure your beds are well drained. Best of luck! -Jim C Mild to Wild(R)