In the summer months, it's imperative to take simple steps in your outdoor garden to help conserve water. The biggest step you can take is to make sure the soil for your landscaping is properly conditioned. If there is too much clay in the soil, it can keep water from being absorbed, which will cause plants to wilt. Conditioning the soil with organic matter like compost and sand aerates the soil and allows you to water less and get better results. Add a few inches of mulch on top of the soil to help prevent evaporation.