Did you know that some plants, especially trees, actually help conserve water? The shade from trees slows evaporation from surrounding plants and lawns. This means these plants require less water to survive. Shade from trees also helps cool the urban environment, homes and buildings. Plus, an established tree only requires between 10 and 15 gallons of water a week to survive.
Trees, shrubs and groundcovers help capture rainwater by improving the soil around their roots, allowing rainwater to penetrate the soil and recharge ground water. The root structure of plants also holds soil in place preventing erosion and runoff on slopes and hillsides. And, the evaporation from trees and other plants adds moisture to the air.