I planted a gooseberry bush last year. I pruned it in the winter, picking out a few strong looking main canes and cutting the rest back to three buds. This year it has had a reasonable crop and I was about to do some summer pruning. However, I've noticed that it has produced several very vigorous looking canes from near the ground. These in fact look healthier and greener than the older woody growth.
So my question is, would it make sense to promote some of these to main canes, and but back some of the old wood? Is that anyway something that I should be doing during my summer prune? I've read that side shoots should be cut back to five leaves, but presumably taking out large canes is better done in winter?
Thanks for your help!