Lenjo, I love Knockouts, they are easy to grow and nothing bothers them, & the blooms on double pink & red look iridescent & the Bantams don't strip them, if I plant them close to their yard. I know your zone must be quite different from mine, but, out of necessity, I've pruned mine all year round, and dug up about 30, very late last fall, and they took right off & some have already bloomed, with ice circling around them. They will get these big, odd looking canes in them, and they look much different from the ordinary canes, and I just cut those dudes out, put them on my wagon, load them up & take 'em to the farm, to fill low spots, rather hoping they might root - we'll see. Knockouts are easy to grow & care for & give us lots of pleasure. Right this moment, they are filled with Doves, Euro/Mourning/Incas, as well as Cardinals, etc. The Euro Collard Doves are almost as big as my Bantam hens, really fun to watch. Happy pruning, it's a tough job here - I love doing it but wish I could do it without feeling it, lol, oh, the thorn bites, ouch!!