I don't hard prune mine for the 1st 3 full years in my gardens but do the first year after they are in my gardens and AGAIN on any that are puny one-vine wonders to force more vines..I stopped hard pruning my Ramona after year two and she is now about 11 feet tall and still blooming..some suggest pruning by half after first bloom cycle but LET IT BE KNOWN if you prune a pruning group 2 that it will lose some blooms that are due in late Summer/early Fall EXCEPT for the B2 which bloom on both old and new vines..You can propagate via "Layering" anytime of the year....if you have a short growing season early Spring might be best for you to get the best results..Jeanne

I had very good results cutting back Warsaw Nike, but winter came on so fast the peak of the second flush was damaged by a hard frost. Still, they survived many light freezes and I loved seeing those beautiful blooms so late in the season.

I would layer them now and leave until next spring when they emerge from the ground. Don't let the soil dry out, but don't let them get soggy either.