Mowing Wet Grass: When It's Okay and When to Wait

Early morning dew often leaves the lawn dripping wet just when you want to mow. Is that a problem? According to turf expert Clint Waltz, mowing wet grass isn't inherently harmful—in fact, professional landscapers and golf courses do it routinely. But there are caveats.

The Pros and Cons

It can be done successfully. Morning mowing is standard practice for crews who have tight schedules. Putting greens are almost always mowed in the early hours.

Watch for clumping. If the grass is tall, wet clippings clump together instead of filtering down into the canopy. Those mats block sunlight and trap moisture, creating a perfect incubator for fungal diseases.

Messy equipment. Wet clippings stick to the mower deck, chute, and wheels, making cleanup a chore.

Best Practice

Waiting until the canopy is dry is ideal—it reduces disease risk and cuts down on cleanup. Waltz personally prefers mowing in the afternoon for convenience and doesn't mind the heat. If you must mow wet, ensure the grass isn't excessively long, and consider a side-discharge or mulching setup that spreads clippings more evenly.