With 90 degree days and long stretches without rain, it is important to focus on keeping your plants well hydrated through the summer. Without water many landscape plantings will become unsightly and growth will be stunted. For trees, shrubs & perennials, it is best to deepwater once or twice a week depending on the species. Let a hose trickle slowly by the plant for an extended period of time so that the water soaks deep into the ground. Then let the area dry out for a few days. This will teach the plant to send roots down more instead of staying near the surface. It is best water plants at the base, especially if watering in the heat of the day. If you water the foliage in the middle of the day, the wet leaves may burn in the sunlight and any flowers will certainly wilt. This is general advice, but you should certainly research the water needs of your specific plants and adjust this advice as needed. Take care of your landscape plantings so your outdoor living rooms can look their best.