We bought a house last September in Vancouver. It has a huge fruiting cherry tree in the back garden (probably 40 ft. high) and two huge (3 storeys high) flowering cherry trees on the front boulevard. At the time we bought, all the trees looked fabulous. This spring, however, the fruiting cherry in back produced few blossoms and meagre leafing on the main branches, but not on any of the smaller branches. The flowering cherry trees in front blossomed and leafed out beautifully, but now the leaves, particularly at the bottom 1/3 of the tree, are looking terrible and falling off. We want to keep all of the trees! Can different types of cherry tree all get the same thing? Does anyone have any suggestions? I don't want to call the city yet, for fear they will just take down the trees. Thanks very much.