Hi all... I've been scouring the net trying to find any information about growing R. hystrix and S. minor in the Pacific Northwest (even the Sunset magazine website doesn't have info on them!). I know cold hardiness shouldn't be a problem (S. minor and R. hystrix have survived well into the -20s) but these plants require a lot of summer heat from what I can tell. But what I am wondering is how does too little heat affect plant growth with these species... do the plants just wither and die after a year with less heat or do they do alright but grow extremely slowly. If anyone has any information about growing these species in the Pacific Northwest or equivalent climate (such as Europe etc.) ..it would be great. When I finally do get my own garden (soon I hope!), I definitely want to try these.