Hopefully I've caught this one early enough to rectify in time. It appears that I should have split up the canes of my raspberries before I planted them. This is not explained on the labels of any of the plants. I shall be working on my solution at once and get back to you then. I guess I was confused by the fact they were potted and not bare-rooted... and by the diagrams of the scottish stool system...Oh - I'll be back!