The early trains pull out of Islip while the streets are still half-dark, and the lawns they pass have their own schedule to keep. Jems Landscaping works that daylight — mowing, edging, string-trimming, blowing the walks clear before most people are home to see it happen. The satisfaction is in returning to a property that looked ragged on Monday and leaving it squared away by noon. Either end of the year brings the bigger jobs, the cleanups that reset a yard before and after the growing months. In between it is the same honest loop, one week after another, all summer long.