North Dakota Lawns: When to Make Your Last Mow

North Dakota lawns typically stop growing once (daytime) temperatures consistently sit in the 40-50 degree range, and the general rule is simple: get in your last mow right before the first frost. While we're still quite a ways away from that, it's always good to know before it's too late.

When & How You Should Stop Mowing Your Lawn in North Dakota

According to TruGreen.com, there's a process you should follow before getting to that final chop. The source says you should progressively lower your grass height as late fall and winter approach, rather than giving it a single, super short chop. You need to gradually lower your mowing height as fall approaches, working your way down to about two inches by the time winter hits.

(Also Read: North Dakota Tourism Updates Sunflower Field Map For 2026)

What Happens If You Mow After the First Frost

The source says mowing after the first frost comes with a risk. Frozen moisture inside the grass blades can snap if you walk on it or mow. If you absolutely must mow after the first frost, wait until a warmer part of the day, when the grass has thawed, and make sure it's dry. You will only want to trim the grass about a third of an inch.

Essentially, the best thing you can do for a healthy lawn year after year is to pay attention to the weather forecast and start gradually lowering your mower weeks leading up to that first frost.

I know we don't want to think about this right now; it's still summer, after all. Even so, the fall season is right around the corner, and before long, we'll have to put away our lawn mowers for the season. Hopefully this information will help you prepare.