The right mowing height depends primarily on your grass type. “In summer, raise your mowing height by half an inch to an inch,” advises Dr. Raudenbush. Dr. Raudenbush recommends the following schedule:Spring: Mow every 4 to 7 days when growth is at its peak. “Leave clippings on the lawn if they’re short—they return valuable nutrients and help retain moisture,” says Dr. Raudenbush. Dr. Raudenbush also recommends checking for bare spots or areas prone to weeds and addressing them right away.