Prune mulberry trees hard straight after harvest to keep them a manageable size. I cut mine back hard each year, and it never gets ant bigger than 2-3m tall. The new growth produces fruit the following spring... and we get bucket loads! Because I prune every year, I am only ever cutting into young wood, so it reshoots readily. Be careful cutting back older wood for the first time - it doesn't always reshoot. Just try cutting a branch or two. If shoots form, then cut a few more. If you are ready