Plum trees

Question

I have two Italian plum trees which normally bear lots of fruit. This year all of the plums developed what looked like a fungus and withered on the trees. What would cause this and how would you treat it?

Answer 1

Would it be possible to send a photograph? If not, see these fact sheets for plum diseases to determine whether the symptoms fit:

https://extension.psu.edu/plants/tree-fruit/diseases/stone-fruit-diseases
http://www.caf.wvu.edu/kearneysville/disease_descriptions/ombrownr.html
https://plantdiseasehandbook.tamu.edu/food-crops/fruit-crops/plum/