boysenberry plants

Question

The boysenberry plants grew very long branches, with beautiful leaves, maybe 6 ft. long. They did not grow any berries. Now all the leaves fell off. Do I cut them down to a certain amount or do I leave them alone? They are about 8 or 9 months old. What to do with them? All my fruit leaves have fallen off, do I prune them now or when?

Answer 1

Yes, I would cut them back some. This article on thornless blackberry pruning is the same as you would treat boysenberries: http://www.wvu.edu/~agexten/hortcult/fruits/prunblkbr.htm