Mulberries are deciduous trees that grow 20 to 60 feet tall. Their leaves are bright green and come in different sizes and shapes, even on the same tree. These trees like heat and tolerate alkaline soil. When mulberry trees are young, their branches can grow too quickly and begin to droop. Knowledge of how to prune them correctly, especially during this time, will help you grow a strong, healthy tree.
Prune the mulberry after all the leaves fall off, when the tree is dormant and less susceptible to disease, and before buds appear.
Sterilize pruning shears. Go over the blades with a rag dipped in rubbing alcohol.
Prune back branches of the tree when it is young to keep them from drooping and to maintain shape. Cut these branches right outside a node, where the branch swells and leaves attach.
Cut broken, dead and diseased branches just outside the root collar, where the branch attaches to another branch or the trunk. Remove crossing branches to increase air flow through the tree.
Prune off any low-hanging or otherwise inconvenient branches in winter, for best results, although any time of year is acceptable.