|Let the beautiful blooming dogwood trees be your cue to prevent the spots, early red color, and premature drop that can plague these trees. As the trees’ flowers give way to the new leaves, look at dogwood, crabapple, and redbud trees but also Japanese maples. They are all putting on succulent new leaves that are vulnerable to the disease that causes summer leaf loss. Use a fungicide spray on the new leaves as they are unfurling to forestall the return of fungus disease this year. Spray weekly, or more often if the weather is very rainy, until the leaves are fully open. The longer the leaves stay on the tree and the healthier they are, the better they can nurture the tree and promote next year’s flowers.