Summer can be a stressful time for your plants, especially if you live in a hot, dry climate. Plants that thrive in full sun will need to be watered more frequently than those enjoying shade. Larger, more established plants require less water than smaller, newly started plants. If your plants are routinely deprived of water, they are at increased risk for insect invasion or disease. Overwatering, however, can create problems such as fungus. Find a happy medium for your plants to thrive.
Check your plants' moisture levels daily during hot, dry temperature stretches. The soil should be allowed to partially dry out between waterings to avoid overwatering. Allow the soil around larger trees and bushes to dry out several inches deep. Smaller plants will need more frequent watering.
Water your plants at a speed that allows the soil to absorb the water quickly. Watering too rapidly or roughly will cause soil erosion. You can spread a soaking hose through your garden that will slowly soak the soil around it, or use a hose-end sprayer set on the shower setting.
Moisten the entire area around your plants. Sandy soil needs more water than clay soil, as it drains faster. One inch of water in sandy soil will penetrate up to 12 inches. This is a good amount of water for annuals and perennials. Shrubs will need about 2 inches of water.