Last year I had two potted Meyer lemon trees delivered. They did fine last year with a reasonable crop of fruit. This year started out fine with numerous flowers. However many if not most of the small green fruit turns yellow, dries out, turns black and falls off the tree. I have submitted a picture of the problem but I do not know if it will be attached A few months ago I imbedded three tree citrus fruit fertilizer spikes and water the trees twice per week. Any help as to how to halt this problem. THanks