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University of Minnesota Extension

Raise your mower height

Closeup of an area of grass (strong creeping red fescue) on a lawn.

Raising your mower height to 3-3.5 inches results in a denser, healthier lawn.

As small as they are, longer grass blades mean more photosynthesis and stronger, deeper grass roots. The grass blades also shade the grass crowns and soil, keeping them cooler during the heat of the summer. This reduces that chance of burned out grass. That shading also shades annual weed seeds, preventing them from germinating.

Grass is one of our toughest ground covers and important for work, play, pets, and access around your landscape. Healthy lawns help slow run-off and erosion caused by heavy rains. Lawns cool the surrounding temperatures. 

If you have a lawn, subscribe to our Turf team’s Home Lawn Care Newsletter to stay up on the timing of tasks for a healthier lawn.

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