Cutting the lawn too early or too short in spring is one of the easiest ways to stress grass right when it is trying to green up. Homeowners in Grand Junction, Fruita, and Palisade often ask when to do the first mow of the year and how high to set the blade. The short answer: wait until the grass is actively growing and long enough that you are only removing the top third, and set the mower high so the lawn can shade the soil and hold moisture as the weather warms up.

Mesa Turf Masters provides lawn maintenance and lawn care across the Grand Valley so your first cut and every cut after supports a healthy, green yard.

When to Do the First Mow of the Year in Western Colorado

Do not mow by the calendar. Mow when the grass has started growing and is tall enough to cut without scalping. In the Grand Valley that usually means sometime in March or early April, but it can be earlier in a mild year or later after a cold, wet spring. The goal is to wait until the lawn is clearly out of dormancy and then take off only the top portion of the blade.

  • Watch the lawn: When the grass is consistently green and growing, it is ready for a first cut. If it still looks brown or barely growing, wait another week or two.
  • Rule of thumb: Do not remove more than one third of the blade height in a single mow. So if your target height is three inches, wait until the grass is at least four to four and a half inches tall before the first cut.
  • Avoid wet soil: Mowing when the ground is soggy compacts the soil and can tear grass or leave ruts. Mow when the surface is dry enough that the mower does not sink in or leave tracks.

What Height to Set for the First Mow

Set the mower higher for the first cut of the year than you might later in summer. Longer grass shades the soil, keeps it cooler, and holds moisture better. That helps the lawn through hot, dry stretches and reduces weed pressure. For most lawns in Grand Junction, Fruita, and Palisade, a cutting height of two and a half to three inches works well for the first mow and for the rest of the growing season.

  • First pass: Use the high end of that range. You can lower the deck slightly over the next few mows if you prefer a shorter look, but do not drop below two inches. Shorter grass has less leaf to absorb sun and feed the roots and is more likely to turn brown in summer.
  • Sharp blade: A sharp blade cuts cleanly and stresses the grass less. A dull blade tears the grass and can leave brown tips and open the door to disease. Sharpen or replace the blade before the first mow of the year.

Why the First Mow Matters for the Rest of the Season

That first cut sets the stage for how the lawn will look and respond for the next several months. Cutting too early can damage tender new growth and slow green up. Cutting too short can expose the soil to sun and weeds and make the grass more dependent on constant watering. Doing the first mow at the right time and at the right height gives the lawn a clean start without stress. After that, keep a consistent schedule: mow often enough that you never remove more than one third of the blade at a time. That usually means at least once a week in the peak growing season for most Grand Valley lawns.

Combine the First Mow With Spring Care

The first mow fits into a bigger spring routine. Once the lawn is growing, it is a good time to have aeration done if the soil is compacted, and to get on a fertilization and weed control program so the grass has the nutrients and space it needs. Many homeowners in the Grand Valley pair the first cut with irrigation startup so the lawn gets water on a set schedule as the weather warms. A little planning in spring pays off with a lawn that stays greener and healthier with less effort later.

A Quick First Mow Checklist

  • Wait until the grass is actively growing and at least one third taller than your target height.
  • Set the mower to two and a half to three inches for the first cut and avoid going lower than two inches for the season.
  • Use a sharp blade and mow when the ground is dry enough to avoid ruts and compaction.
  • Do not remove more than one third of the blade in any single mow.
  • Line up lawn care services like aeration, fertilization, and weed control so the lawn is set up for the rest of the year.

Getting the first mow right is a small step that makes a big difference for the rest of the season. For help with lawn maintenance or a full lawn care program in the Grand Valley, call (970) 434-5440 or request a free quote for service in Grand Junction and the surrounding areas.