Black mulberries turning white and soft

Question

My fruit-bearing black mulberry tree, from which we have had berries for 5 years, is presenting mixed black and white berries this season – mostly white, very soft, unedible white fruit. What’s happening? Thanks!

Answer 1

This could be a lack of phosphorus and potassium. Each year add a 10-10-10 application of fertilizer or add compost around the tree. This can help to give it the proper nutrient balance that it needs.

This article will give you more information on their care: https://www.gardeningknowhow.com/ornamental/trees/fruitless-mulberry/how-to-grow-mulberry-trees.htm