Q.Mulberry tree not bearing this year
I have a mature mulberry tree in my backyard. Last year it produced an absurdly abundant crop of berries, but this year it does not seem to be bearing fruit. Do mulberry trees produce fruit in cycles, heavy one year, lean the next?
Lack of fruit could be due to weather, drought, nutrients or even lack of pollination.
Mulberry Tree's can benefit from a fertilizer application each year, but it could also be excess nitrogen if the area around the tree has been heavily fertilizer.
A soil test can help you determine if nitrogen is the issue.
https://www.gardeningknowhow.com/ornamental/trees/fruitless-mulberry/how-to-grow-mulberry-trees.htm