When it comes to lawn improvement in the Northeast and Midwest United States, “September is Lawn Month” for all the reasons outlined here.
Oh sure, people are more revved-up to perform lawn improvement projects in the Spring, but September is actually the BEST time!
The first step in that process should be getting current soil test results for your lawn, so you have time to get your soil test results back, and purchase any lime or specialized fertilizer that may be required. Here’s a video to help guide your process:
Once you have soil test results back from the lab, this video explains what to do next: