Summer gardens need lots of water to thrive. Smartly watering your potted plants not only helps you save water, but it trains them to become heartier and healthier. When watering hanging baskets, put other potted plants underneath; the water that drips down will also water those plants. Don't water every day: Give plants a deep soak at the roots every few days; they'll retain water and send roots deeper into the ground. And when using a hose, don't spray water into the air. Instead, send water below the foliage line. More water will get to the base of the plant and into the roots, where it counts.