I'm about 30 miles north of Myrtle beach and spring will be coming soon. This is my second spring here and last year I planted a couple of Knockout Roses. They did very well and will need to be cut way back. I would like to try and propogate the cuttings. It's growing quite a bit of new folage right now after all that warm weather we had. My questions would be; What would be the optimum time to prune and take my cuttings and how large a cutting would you try to root? The plants are now propablt 3 ft tall and I plan to prune them way back.