black raspberry bush with three large clusers of ripe and unripe berries - Milanika/Getty Images Pruning is an important part of caring for any raspberry plants. Black raspberry plants (Rubus ...

Leafy vines can be pruned any time during the year. Vines that flower in spring should be pruned soon after the bloom. The best time to prune summer-flowering vines is in late winter to early spring.