Dry grass should grow in patches in the desert (and badlands)

At the moment the dry grass looks messy in the desert and the badlands, plus in the badlands biome, it looks out of place. Therefore it should grow in patches, and it will look tidier and less random. This makes sense scientifically because if there is water in one place, grass is going to grow in a patch around that water not randomly over the desert. Or ever better, make it so there is a high amount of growth at the bottom of hills, as this also makes sense because water is more likely to collect there as well as being in shade from the sun for part of the day.