Hoses and sprinkler systems can help keep gardens, facility grounds, and other green spaces looking healthy. Lawn sprinklers, sprinkler heads, and underground sprinklers deliver water to grass and foliage right where it's needed. Drip irrigations systems are often used in areas with water use restrictions to water plants using a regulated dripping action. Irrigation and sprinkler timers turn sprinklers on and off at specific times to control the amount of water being delivered.