-Avoid watering during the hottest part of the day
-Not sure when to prune? Prune spring-flowering shrubs, such as lilacs, and large-flower climbing roses, immediately after the blooms fade. They set their flower buds in autumn on last year's growth. If you prune them in fall or winter, you remove next spring's flower buds.
-Be mindful of the nesting period, as you mustn’t trim your hedge if it has resident birds that will be disturbed. From spring to autumn the main consideration is keeping your hedge watered, and to fertilize it once. If needed, you can also carry out light maintenance pruning to keep your hedge in shape during these months, though you must be careful not to disturb nesting birds. Then in winter, you can prune more heavily if needed.
-Perennials generally need three years to achieve their mature size after you plant them. Remember the adage that they "sleep, creep, and leap" each year, respectively.
-Don't clean up everything in your garden in the fall. Leave ornamental grasses for beauty and the seed heads of perennials such as coneflowers to feed the birds. Avoid cutting back marginally hardy perennials, such as garden mums, to increase their chances of surviving a harsh winter.