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How to Make Black Mulberry Trees Produce More Fruit

By Tracy Morris ; Updated September 21, 2017

A mulberry tree produces an aggregate fruit similar in appearance to blackberries. However, unlike blackberries, mulberries are a delicate fruit that will not survive rough handling. Because of this, mulberries are not widely sold in stores and fruit stands. If you have a mulberry fruit tree, you can grow your own seasonal fruit for jelly, jam or pies. Proper care of your tree will increase the fruit yield that it produces yearly.

Select both male and female mulberry trees from a tree nursery that specializes in mulberry trees for your landscape. Fruit is only produced on female mulberry trees, while male trees produce pollen. A good variety of both trees will ensure that the flowers of the female trees are pollinated and produce abundant fruit. A tree nursery employee can help you select the correct gender of tree.

Plant your trees in loamy, well-drained soil. Mulberries perform best when roots are kept moist but not wet.

Avoid pruning as much as possible to encourage blossoming. Pruning reduces the amount of fruit that grows on the current season’s growth. If you must prune, then only remove dead wood or branches that rub and are less than 2 inches in diameter. Prune trees in late fall when the trees are dormant and do not drip sap.

Fertilize your mulberry trees with a fertilizer that is rich in potassium such as 5-8-5. Potassium-rich fertilizers help to increase blossoms in plants, which leads to more fruit production.

Harvest your berries as they become ripe to prevent birds, squirrels and other wild animals from taking them. To harvest berries, spread a clean tarp on the ground and shake tree. Ripe berries will fall from the branches and onto your tarp.


Things You Will Need

  • Mulberry tree nursery
  • Shovel
  • Pruning shears
  • Potassium-rich fertilizer
  • Clean tarp

About the Author


Tracy Morris has been a freelance writer since 2000. She has published novels and numerous online articles. Her work has appeared in national magazines and newspapers including "Ferrets," "CatFancy," "Lexington Herald Leader" and "The Tulsa World." She holds a Bachelor of Arts in journalism from the University of Arkansas.