The a.m. is the best time to water the lawn because the air is cooler and there’s usually not much wind to blow the droplets. In the middle of the day, water evaporates too quickly. And in the evenings, water can cling to the blades of grass overnight, which can cause lawn diseases. The water sits there and promotes fungus. A wet lawn at night is the perfect condition for fungus to grow.
Best Time of Day to Water Your Lawn