Blackberries aren’t just for summer snacking. Here’s how to grow them indoors so they can be enjoyed year-round.

Blackberries and hybrids such as loganberries and tayberries are all pruned in the same way. New canes grow one season and fruit the next, after which they are exhausted and can be removed.

Prune and train your blackberries as you do any other cane fruit. New growth should be supported as soon as possible to avoid wind damage. Perhaps you will have already loosely tied back the long new ...