
The 1/3 Rule: Why How Tall You Cut Matters More Than How Often
Cutting more than a third of the blade in one mow shocks the plant and weakens the roots. Here's the height chart we follow for every grass type in MS.
Most homeowners scalp their lawn without realizing it. The 1/3 rule is the single most important habit you can adopt: never remove more than one-third of the grass blade in a single mow.
For tall fescue (the most common cool-season grass in Mississippi), keep summer height at 3.5–4 inches. For bermuda, stay between 1–1.5 inches. Going shorter weakens the root system and invites weeds.
Sharp blades matter too. A dull blade tears the grass instead of slicing it, leaving frayed tips that brown out and invite disease. Sharpen at the start of every season.


