As you can see in the graph above, cooler northern lawns exhibit early and late season growth spikes while slowing down dramatically during the peak heat of midsummer.
During the peaks, you’ll want to mow weekly to keep your lawn looking sharp and avoid overgrowth. During the troughs, you’re safe mowing every other week or even less.
For customers, in places like Michigan, Illinois, Minnesota, or Ohio your peak growth will occur from late April to mid-June. It’ll then slow down as peak heat sets in – typically through the middle of August when the second growth spike kicks off and goes until the end of October.