You did a great job of planting me, but you've kind of left me out to dry here. I could use a little protective layer, like some bark or pine straw or even leaves. Not only will it help keep water from evaporating, but it will also keep rain and wind from washing away my top soil. And you know those weeds you don't particularly care to deal with? Mulch helps block the sun from helping them grow. Get some good, organic stuff and it will even help feed me as it decomposes.