In the event that rained at your home like every 3 days - the same precise amount each time - you presumably would not require a sprinkler system. In any case, nature doesn't work that way, and the best way to guarantee heathy, lavish yard is to verify that your garden and plants get a consistently coordinated and evenlymeasured amount of water. In the dry season when there is practically no rainfall, your plants can endure suffer and damage after only a couple of days without water.