Different methods are required to prune raspberries of the two different types. Through the summer they develop fruit buds along the cane and shoot out little branches which grow berries in Autumn. Prune summer fruiting raspberries in the late summer or fall, after the berries have been harvested. Pruning autumn bearing raspberries is very simple, just wait until late winter and cut all canes to the ground. Before pruning, it is important to learn the difference between the different raspberry canes, optimal pruning time, and the pruning basics associated with raspberries. Also prune out the tips of the canes. Autumn fruiting raspberries are the simplest of all to prune, because they fruit on … While pruning raspberries may seem difficult, it helps stimulate new growth, produces a larger harvest, and removes disease and dead canes from your plant. This page provides advice on how to prune raspberries and when you should prune your autumn fruiting raspberries. Since these canes bear berries on second year growth, the aim is to prune out only those canes which have fruited this year (floricanes). Raspberries are typically planted in late winter to early spring, and with autumn bearing raspberries the primocanes will fruit in the same year, when the autumn season arrives. PRUNING FALL-BEARING RED RASPBERRIES FOR TWO CROPS. Raspberries | Pruning | Gardening Information | Thompson & Morgan. The summer crop will be produced on the side shoots of the remaining portions of the canes. The productive life of this cane is over. Pruning Summer Raspberries. By winter the leaves have fallen. You need to treat the summer ones slightly differently to the autumn ones.Prune all of your autumn fruiting raspberry canes to … How to Prune or Cane Fall-Bearing Red Raspberries. In the spring, remove all weak, diseased, and damaged canes, leaving only the most vigorous canes.