Garafraxa Turf Inc

Best Grass-Cutting Practices to Prevent Weeds in Guelph

Maintaining a beautiful lawn in Guelph can be challenging, especially when keeping weeds at bay. One effective strategy for weed prevention is keeping your grass cut at the right height. Understanding the best grass cutting  practices enhances your lawn’s aesthetic appeal and promotes healthier, more resilient grass that can naturally suppress weeds.


Understanding Grass Heights and Weed Prevention

The height at which you cut your grass significantly influences its health and ability to combat weeds. When cut too short, grass stresses plants, making them more susceptible to diseases, drought, and weed invasion. Conversely, allowing grass to grow too long can create an inviting environment for pests and decrease the lawn’s overall visual appeal.

The ideal height for most grass types commonly found in Guelph, such as Kentucky bluegrass, fescue, and perennial ryegrass, is 2.5 to 3.5 inches. Maintaining this height helps your grass develop a robust root system and retain moisture, making growing weeds more challenging.


Benefits of Optimal Grass Height

  1. Improved Root Development: Longer grass blades foster more profound root growth. This robust root system helps the grass access nutrients and water more efficiently, enhancing its resistance to weeds.
  2. Shade and Cooling: Grass blades cut at the optimal height provide better ground cover, shading the soil and keeping it more relaxed. This environment discourages weed seeds from germinating, as they require warmth and sunlight to thrive.
  3. Enhanced Photosynthesis: Taller grass has more leaf area for photosynthesis, the process by which plants produce the energy they need to grow. This increased energy production supports a healthier, thicker lawn that can outcompete weeds.


Practical Grass-Cutting Tips for Guelph Lawns

To maintain your lawn at the ideal height, follow these practical mowing tips:

  1. Regular Mowing Schedule: Aim to mow your lawn once a week during the growing season. Regular mowing keeps your grass at the optimal height and prevents it from becoming too long and unruly.
  2. Adjust Mower Height: Set your mower to 2.5 to 3.5 inches. This setting will vary depending on your grass type and seasonal growth patterns. Consider raising the mower height slightly when the weather is hot and dry to reduce stress on the grass.
  3. Sharp Blades: Make sure your mower blades are sharp. Dull blades can tear the grass, leading to a ragged appearance and making the lawn more vulnerable to disease and pests.
  4. Mow Dry Grass: Try to mow when the grass is dry. Wet grass can clump and cause an uneven cut, harming your lawn’s health and appearance.
  5. Leave Clippings: Consider leaving grass clippings on your lawn. The clippings act as a natural mulch, returning nutrients to the soil and retaining moisture.


Seasonal Considerations

In Guelph, seasonal changes can affect how you should approach grass-cutting:


  • Spring: Begin mowing when the grass reaches about 3.5 inches. This height ensures the lawn is healthy and ready to start the growing season strong.
  • Summer: Raise your mower height slightly to help your grass withstand heat and dry conditions. Keeping the grass around 3.5 inches will provide shade and moisture retention.
  • Fall: Gradually lower the mower height as the growing season winds down. This practice helps prepare the lawn for winter, reducing the risk of snow mould and other winter diseases.



Maintaining the optimal height for your grass is a simple yet effective way to prevent weeds and promote a lush, healthy lawn in Guelph. By following these guidelines, you can enjoy a vibrant green space that requires less maintenance and is more resistant to common lawn problems.

For professional lawn care services, including expert grass cutting, consider contacting Garafraxa Turf. Count on our experienced team to help you achieve and maintain the perfect lawn.