Hi Gerry, I planted a cherry tree ” Stella” 4 years ago and it is very healthy. Every year it has a very good crop but then the fruits dry up, shrivel and fall of the tree. This year there were about 10 edible cherries but even then they were not as plump as they should be.Could it be that the ground is to dry directly after flowering? We had no rain during the entire month of May this year and last year.Thanks Clair
Also, young trees tend to be vigorous and grow strongly rather than fruit much. Apply some sulphate of potash, 30g/square metre, in spring for three years.