Lawn timing guides
When to do each lawn job, keyed to soil temperature and season rather than a calendar date, with the extension research behind each threshold.
Timing guideCrabgrass pre-emergent timingThe 50–55°F window and why the date on the calendar misleads.Timing guideMeasuring soil temperatureDepth, time of day and spot choice for readings you can trust.Timing guideFertilizer scheduleFall-heavy for cool-season grass, summer for warm-season grass.Timing guideWhen to seed grassLate summer for cool-season, warm soil for warm-season grass.