Hello! I am up in Zone 3 and have transplanted some "Wyoming" Black Raspberry plants. This transplant took place about a month and a half ago (mid-August). The transplants have taken and are growing well. They are expressing themselves typically but I wanted to ask this forum should I prune the tips of these now before frost sets (in about a week or two)? I can supply a few pictures. Overall, they are about 30" in height. My instinct is to stake them up as is, run wire between the two stakes, tie the fronds to the wire/stakes and then possibly burlap them for the winter. The canes are all new growth, no last years canes present.
To prune or not right now? Or, should the pruning take place late the following May to encourage lateral growth? I thank you for your input on this.