07/10/2026
We always stress the importance of mowing height. Every bit as important as our program. Especially mid summer. Looked at a lot of lawns in the last week - customers and potential customers. Some of the 2" mowers even questioned my suggestion of raising the height. Below is a nice Google AI explanation
AI Overview
In the Pittsburgh area, mowing at 4" is generally much better for your lawn's health than 2". Taller grass develops deeper roots, shades out w**ds like crabgrass, and retains soil moisture better during hot, dry summer spells. Mowing at 2" should be avoided as it shocks cool-season grasses and leaves them vulnerable to heat stress.
Why 4" Wins in Western Pennsylvania
Drought Resistance: Pittsburgh's summer heat can quickly scorch a lawn. Taller blades (3.5" to 4.0") shade the soil, keeping it cooler and drastically reducing moisture evaporation.
W**d Prevention: Sunlight is required for w**d seeds (like crabgrass) to germinate. A thick, 4" canopy blocks the sunlight, starving w**d seeds before they take hold.
Deep Root System: The length of a grass blade directly dictates the length of its roots. A 4" lawn has deeper, more robust roots that can find nutrients and water buried deeper in the soil.
The Dangers of a 2" Cut
Scalping Risk: Cutting cool-season turf (like Kentucky Bluegrass or Fescue) down to 2" requires taking off too much green leaf tissue at once, which causes severe stress.
Nutrient Starvation: By removing the majority of the green blade, you rob the plant of its ability to photosynthesize and produce food.
Susceptibility to Disease: Stressed, weak turf is significantly more susceptible to lawn diseases, bare patches, and grub damage.