Best Time to Start Weekly Lawn Mowing in Scarborough (2026 Guide)

Best Time to Start Weekly Lawn Mowing in Scarborough (2026 Guide)

Spring is finally here, and if you're a Scarborough homeowner, you're probably wondering: when should I start mowing my lawn?

The quick answer: usually mid-April, but it depends on whether your grass is actually ready. Mowing too early is one of the biggest mistakes homeowners make — cutting into dormant or weak grass can damage it before the growing season even begins. The good news is that there are clear signs to watch for, and once you know what to look for, timing your first cut becomes simple.

In this guide, we'll walk you through exactly when to start mowing in Scarborough, how to do that first cut right, and how to set yourself up for a healthy lawn throughout the growing season.

When Does Grass Start Growing in Scarborough?

Grass doesn't wake up on a calendar date — it wakes up when the soil is warm enough.

Specifically, cool-season grasses (like the Kentucky Bluegrass and perennial ryegrass common in Scarborough) begin active growth when soil temperature consistently reaches 10°C (50°F). This is the magic number.

In a typical year, Scarborough hits that threshold in the second or third week of April. However, there's an important factor many people forget: Scarborough's proximity to Lake Ontario actually delays spring compared to areas further inland. While neighborhoods west of Toronto might see grass greening up in early April, our area often runs 1-2 weeks behind. The lake keeps our soil cooler longer.

Looking at the past few years:

The key word is consistently. One warm day doesn't count. You want to see soil temperatures holding above 10°C during the day for several days in a row before you pull the mower out.

Signs Your Lawn Is Ready for the First Mow

Soil thermometers are great, but not every homeowner has one. Here are the practical signs that your Scarborough lawn is ready:

1. Grass is 3-4 inches tall

If your lawn made it through winter decently and new growth has started, it should hit 3-4 inches by mid-to-late April. This is long enough to mow safely.

2. The ground is firm, not soggy

Spring snowmelt leaves lawns waterlogged. If you walk on the grass and your shoes sink or the ground squelches, wait another week. Mowing wet, spongy ground compacts soil and damages grass roots.

3. Daytime temps are consistently above 10°C

Check the forecast for the coming week. If lows are still dipping to freezing or below, your soil isn't warm enough yet.

4. You see active new green growth (not just matted brown)

This is crucial. Dead grass from winter (called thatch) looks brown and matted. New growth is vibrant green. Once you see that green emerging, your lawn is actively growing and ready to mow.

5. Spring flowers are blooming

This is nature's calendar. When crocuses and daffodils are blooming in your neighborhood, grass is ready to mow. It's one of the most reliable indicators.

Your First Mow of the Season: How to Do It Right

The first mow of the season is not like any other mow. Done wrong, it can set your lawn back. Done right, it promotes healthy, thick growth all summer.

Set your blade to 3-3.5 inches on your first cut. This is higher than your summer cutting height. Why? Because grass is still recovering from winter and hasn't hit peak growth yet. A shorter cut stresses it unnecessarily. A taller cut protects the soil and encourages deeper root growth.

Make sure your blade is sharp. A dull blade tears grass instead of cutting it cleanly, leaving brown, shredded tips that look unhealthy and invite disease. If your mower hasn't been serviced since last fall, get the blade sharpened before that first cut.

Rake or dethatch first if needed. If there's heavy thatch (matted dead grass) on your lawn, rake it out or use a dethatcher before mowing. This helps new growth come through and prevents mowing from just pushing matted stuff around.

Never mow wet grass. Wet grass clogs the mower, compacts soil, and spreads disease. Mow in the afternoon after morning dew has dried, ideally on a dry day.

Consider a spring cleanup. Leaves, branches, and winter debris should be removed before the first mow. Many Scarborough homeowners combine their first mow with a spring cleanup for the best results. This is also the ideal time for aerating and overseeding if your lawn needs help.

Lawn Mowing Schedule for Scarborough: Month by Month

Once you start that first mow, here's what a typical Scarborough lawn needs:

April: 1-2 mows total. High cutting height (3-3.5 inches). Focus on cleanup and getting rid of winter debris.

May: Weekly mowing begins. This is when grass growth really ramps up. You'll likely mow every 5-7 days. Grass is putting energy into leaf growth, not root depth, so weekly cuts keep it healthy and looking sharp.

June: Peak growing season. In rainy years, you may need to mow twice per week. Maintain consistent cutting at 3-3.5 inches.

July-August: Raise your cutting height to 3.5-4 inches. During heat stress, taller grass shades the soil and helps roots stay cooler. Growth slows in summer heat, so you may go 7-10 days between mows. Deep watering becomes more important than frequent mowing.

September: Resume regular weekly cutting as temperatures cool and fall moisture arrives. Growth picks up again.

October: Final 2-3 mows. Gradually lower cutting height back to 2.5 inches as you approach the end of the season. The last cut should be short to prevent matting over winter.

November onward: Season is done. Final cleanup and prep for winter dormancy.

Ideal Mowing Heights for Scarborough Lawns

Height matters more than most homeowners realize.

The grass in Scarborough yards is typically Kentucky Bluegrass or perennial ryegrass — both cool-season varieties that thrive at specific heights:

These heights encourage deep root growth, reduce water stress, and naturally suppress weeds and moss. Cutting too short (like down to 1.5-2 inches) is a common mistake that weakens your lawn.

Should You Mow Your Own Lawn or Hire a Pro?

This is the real question many Scarborough homeowners face.

DIY Lawn Mowing:

But there are real costs:

Professional Lawn Mowing Service:

For busy Scarborough families and professionals, a weekly mowing service often makes more sense than the DIY route. The math gets even better when you factor in the mower's cost and maintenance.

Ready to Stop Worrying About Lawn Mowing?

Starting your lawn care routine at the right time sets the tone for the entire growing season. Get the first mow right, and your grass will be healthier, thicker, and greener all summer.

Dawn Till Dusk Landscaping handles weekly lawn mowing across Scarborough from mid-April through October. We show up every week, adjust heights seasonally, maintain sharp blades, and handle all the details so you don't have to. Service starts at $49.99 per week.

Whether you're ready to start mowing or ready to hand it off to pros, we're here to help. Call us at (647) 893-3876 for a free quote, or visit our grass cutting services page to learn more.

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