Because raspberries need a yearly prune to thrive, whether they are summer-bearing or autumn-bearing (more on that later).

Pruning soft ... Summer-fruiting raspberries behave like blackberries, fruiting on one-year-old canes that are cut out after harvest and then replaced by the young canes. Autumn-fruiting varieties ...

Prune autumn fruiting varieties in mid-winter, cutting the old canes back to ground level. Tie in new stems to the supporting wires as they grow, using garden twine. Raspberries are a hungry and ...