Here’s a watering rule of thumb: Water deep, not often.
Water should reach 8 to 12 inches down, creating a well of water for plants and trees to draw upon in high heat. To determine if you’ve reached your mark, press a large screwdriver into the soil: If it meets resistance, keep watering.
Hand-watering with a garden hose and aerator is best. Count to 10 as you water the base of plants. Move and repeat. If you have lots of property to water, then use a sprinkler, but adjust it so it doesn’t waste overspray on driveways and walkways.
Water in the early morning: Not 7 a.m. when you usually roll out of bed, but when the sun rises at 5 a.m. or 6 a.m. However, don’t get fixated on watering in the morning. If water restrictions require only evening watering, soak ‘em good and don’t fret about fungus forming on leaves that stay damp throughout the night: A little powdery mildew won’t kill your shrubs, but dehydration will.