One of the most common questions we get from Fort Wayne homeowners is how often they should mow. The answer depends on the season, your grass type, and recent weather — but there are clear guidelines that keep your lawn looking sharp without overdoing it.
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The General Rule: Mow by Growth, Not by Calendar
The one-third rule is the gold standard: never cut more than one-third of the grass blade height in a single mow. For most Fort Wayne lawns kept at 3 inches, that means mowing when the grass hits about 4 to 4.5 inches. During peak growing season (May and June), that's roughly once a week. In the heat of July and August, growth slows and you may only need to mow every 10 to 14 days.
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Spring (April–May): Weekly Mowing
Cool-season grasses like Kentucky Bluegrass and Tall Fescue grow fastest in spring when temps are between 60–75°F. During April and May in Fort Wayne, expect to mow weekly. If we get a stretch of rainy weather, you may need to mow more often to keep up. Don't let the grass get too tall between mows — that leads to clumping and an uneven cut.
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Summer (June–August): Every 7–14 Days
As temperatures climb above 80°F, grass growth slows significantly. Many Fort Wayne lawns go semi-dormant in late July and August if it's hot and dry. During these weeks, mowing every 10 to 14 days is fine. Raise your mow height to 3.5 or even 4 inches — taller grass shades the soil, retains moisture, and resists weeds better in the heat.
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Fall (September–October): Weekly Again
When temps cool back into the 60s and 70s, your lawn picks up again. September and early October are active growth periods in northeast Indiana. Mow weekly and gradually lower your cutting height to about 2.5 inches for the final mow of the season. A shorter final cut reduces the risk of snow mold over winter.
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Common Mistakes to Avoid
Cutting too short (scalping) is the number one mistake. It stresses the grass, exposes soil to sun, and invites weeds. Mowing on a rigid schedule regardless of growth is the second — if the grass hasn't grown, you don't need to mow. Mowing with dull blades is the third. Dull blades tear the grass instead of cutting it cleanly, leaving brown tips and making the lawn more vulnerable to disease.
// THE BOTTOM LINE
For most Fort Wayne homeowners, a weekly schedule from April through June and September through October, dropping to every 10–14 days in the summer heat, keeps the lawn healthy and sharp. Keep the blade high, keep it sharp, and let the grass tell you when it's time to mow.