How can proper mowing height influence pest pressure in turf?

• A. Lower mowing height always reduces pest pressure.
• B. Taller mowing height increases pest pressure.
• C. Height has no effect on pests.
• D. Mowing height only affects weed control, not pests.

Answer: (A)

Maintaining the right mowing height shapes the turf’s vigor and canopy, which in turn affects pests. When you mow within the species’ recommended lower end, you get a denser, more uniform turf that is better at withstanding stress and outcompeting potential pest populations. A dense canopy reduces bare spots and creates less favorable conditions for many pests and the diseases they exploit, while good airflow and sunlight penetration help keep the leaf surface drier and less hospitable to pest development. Since pests tend to proliferate on stressed or sparse turf, keeping the height within the proper range helps keep pest pressure lower. Note that going below the recommended minimum can stress the plant and potentially increase problems, so stay within the safe range.