I purchased some "Prime-Ark Freedom" primocane blackberries, last spring, planted them and they seem to be doing fine. This fall, I wanted to clone them, so I planted the ends in small pots of dirt. I have some non-primocane, Ouachita, fruiting berries, that grow just fine, like this. Within 10 days, they start producing roots. I planted both varieties at the same time, in September. The Freedom berries, however, don't seem to be doing much of anything. I even tried root hormone, but they won't send out roots.
Does anyone have any experience cloning primocane black berries, by planting the stalk?