Lawn Mowing Guidelines
Mowing might seem like a simple task, but how you mow can make a big difference in the health of your lawn. Two key factors to focus on are mowing height and frequency.
Set the Right Mowing Height
For most Pennsylvania lawns, the ideal grass height is between 2.5 and 3 inches. Keeping your grass in this range helps reduce stress and allows it to grow strong and healthy.
Avoid cutting your lawn shorter than 2 inches. Grass that’s cut too low becomes more vulnerable to heat, drought, weeds, insects and disease. Scalping your lawn (cutting it extremely short) can cause long-term damage, so it’s best to keep your mower set at a consistent height throughout the season.
Mow Often, But Not Too Much
A good rule of thumb is to never remove more than one-third of the grass blade at a time. This means you’ll need to adjust how often you mow based on how fast your lawn is growing.
During peak growing times, you may need to mow every 4–7 days. Slower growth periods may stretch that to 7–10 days.
Leave the Clippings
Don’t worry about bagging your grass clippings; leaving them on the lawn is actually beneficial. Clippings break down quickly and return valuable nutrients, like nitrogen, back into the soil. They also help support healthy soil activity.
As a bonus, skipping the bagging step saves you time while mowing.
Keep Your Equipment Sharp
A well-maintained mower is essential for a clean cut. Dull blades can tear grass instead of cutting it, which can lead to stress and disease.
Plan to sharpen your mower blades every third mowing, or at least once a month during the growing season.
By mowing at the right height, keeping a consistent schedule and maintaining your equipment, you’ll promote a thicker, healthier lawn that can better handle stress throughout the season.