Question
We live in New Jersey. Our lawn maintenance service did the last mow of the season over a month ago. Since then, the grass has grown some. Can we still safely mow it even though temps are now in the 30s, we've had frost, and the grass is dormant?

Answer
For this answer, we head over to the   website.  There, we learn from some of Lawncare's wisest wizards, All About Lawns Landscapers Central:

allaboutlawns.com/lawn-maintenance-care/landscaping-and-gardening/putting-your-lawn-to-bed-for-a-long-winter-nap.php

They tell us, 'Once your Grass becomes dormant, you can lower your cutting height to one inch for Warm Season Grasses and two inches for Cool Season Grasses.  Leaving your Lawn longer than two inches may trap moisture, setting the stage for diseases to develop in the Spring.'

I don't agree you should rake up every last leaf that alights on the Grass, nor do I think you should fertilize or even aerate.  But we do agree that it is nice to proceed with a final Winter cut before the Lawn is covered with Snow.  Mimize walking or any other traffic on the Lawn in Winter, because you do serious damage to the Grass when it's brittle.

Hope that's clear.

THE LONG ISLAND GARDENER