I have some non bearing mulberry trees that are over 30 years old and seem to be doing good. They were here before I married my husband. We live in the semi-desert area of Texas and I am wondering if and when I need to fertilize them?
Non Bearing Mulberry Trees
Certified GKH Gardening Expert
Typically, these will do fine on their own. They are a semi-invasive species. You can fertilize, though, if you would like. This would definitely boost their growth.
Since this is a non-fruiting cultivar, you can use 3-1-1 fertilizer once each year in spring. Here is an article that will help: https://www.gardeningknowhow.com/ornamental/trees/fruitless-mulberry/fruitless-mulberry-trees.htm