It’s a common myth that cutting the grass shorter means you have to mow it less. That’s actually not the case, and you can do more harm than good. If you scalp the lawn, it could result in a bare patch, which could make it too inviting for insects and/or susceptible to disease. The key is to cut the lawn different lengths throughout the year. During the summer, the lawn needs a little more shade, so let the blades grow just a little bit more. That way the water doesn’t evaporate so quickly. During the winter, cut it a little bit shorter so that the sunlight can actually get into the soil.