How Often Should You Mow Your Lawn in Denver's Climate?

Denver metro homeowners often ask us: weekly or bi-weekly? The answer depends on the season, your grass type, and what results you want.

Peak Growing Season: May Through June

During peak growing season (May through June), Colorado bluegrass grows fast. Weekly mowing keeps your lawn looking sharp and prevents you from cutting off more than one-third of the blade height in a single session.

• Growth can be 2-3 inches per week in ideal conditions
• Weekly cuts keep grass healthy and thick
• Missing a week means you're cutting too much at once

Summer Slowdown: July and August

By July, growth slows significantly as heat stress kicks in. This is when many homeowners switch to bi-weekly service. Your grass isn't growing as quickly and doesn't need as frequent attention. At No Mow Worries, about 60% of our clients switch to bi-weekly during the heat of summer.

The One-Third Rule is Critical

The one-third rule is critical in Colorado's climate. Never cut more than one-third of the grass blade in a single mowing. Cutting too much stresses the plant and makes it more vulnerable to our intense UV and temperature swings.

Fall Growth Spurt

Fall brings another growth spurt as temperatures cool. September through mid-October often requires a return to weekly mowing to keep up with renewed growth and falling leaves. This is when lawns are building energy reserves for winter.

Winter Prep Matters

Winter preparation matters too. Your final mow of the season should be slightly shorter than usual (but still not below 2.5 inches) to prevent matting under snow cover.

Bottom line: weekly mowing from April through June and September through October. Bi-weekly works for July and August when growth slows. Adjust based on what your actual grass is doing, not the calendar. We handle this timing for our clients automatically - no guessing when to switch back and forth.