We have two Asian perssimon trees that supposed to yield delicious fruits. We had these trees over 6 years. We had one fruit first year, 3 fruits after two years and 8 delicious fruits last year. This year there is no fruit. In the Spring there were many many green fruits on the branches of both trees, but they all dropped on the ground over the period of time and
none left on the trees. So we do not have no fruit this year on both trees. Please advise. Angie