Avoid excessive watering and evaporation. This is a reminder that watering at night will make you garden happier - especially when many plants do not like to be watered in the hot sun.
Save yourself some trouble and invest in a timer for your water system (available at your local hardware store). Timers range from the very simple (attach between your faucet and hose and crank to the desired minutes setting) to the very complex (another app on your phone). Using a timer will help ensure you don't forget to turn the water off (or on).