The best time to water your yard or garden is early morning between 5 and 6 am. During this time, the sun is not out to evaporate the water that you want to soak into the ground. If you water just after sunset, the water will stay on your plants overnight creating a great growing conditions for molds. Most people make the mistake to water in the afternoon heat because they think it is good for the lawn and garden. During this time, most or all of the water is evaporated before the lawn and garden can utilize the water.