why are the buds of my soursop tree falling off?

Question

I just started an orchard of soursop, but I initially planted two trees. One of the trees produced some buds and after a week or so they will fall off.

Answer 1

This article explains all the right conditions for growing healthy soursop trees and avoiding leaf drop. https://www.gardeningknowhow.com/edible/fruits/soursop/soursop-tree-care.htm