|Don't let your garden look like this|
Never water your garden during the heat of the afternoon. Water droplets reflect heat and scorch the plants foliage. Always water during early morning or late evening hours. Better yet if at all possible buy a 75ft soaking hose and lay it through the middle of the garden. Turn it on for about twenty minutes every morning. Your sure to get plenty of water to the right places.
Aerate the ground. Soil that has become hardened during the hot days of summer will only allow run off of water. Use a rate or hoe to loosed up the dirt to allow proper soaking to the right areas of crops.