Name one turfgrass disease that can be managed, at least to some degree, by mowing height.

• A. Fusarium patch (pink snow mold)
• B. Copper spot
• C. Take-all patch
• D. Pythium blight

Answer: (A)

Mowing height changes the turf canopy and leaf surface moisture, which is a big factor in disease development. When you raise mowing height, the canopy becomes less dense, air can move more freely, and leaves tend to dry faster after dew or rain. Fusarium patch (pink snow mold) thrives in cool, damp conditions and is helped by extended leaf wetness under a dense canopy. By mowing higher, you reduce those favorable conditions and can suppress this disease to some degree. It’s a useful cultural practice as part of an integrated approach, alongside proper irrigation, drainage, and overall turf vigor.

The other diseases listed are less reliably managed by mowing height alone because they rely more on soil conditions, root infections, or persistent leaf wetness from irrigation and weather patterns that aren’t as directly altered by mowing height.