Do-It-Yourself Guide

Seasonal lawn mowing: DIY Guide

Penelope Graham

Penelope Graham

29 Sept 20262 min read

A closeup shot of a green lawn with wooden garden structures in the background.

Key takeaways

  • The length of your lawn, and the frequency that you cut it, will change depending on the season.
  • Never cut more than a third of the grass blade at one time.
  • Fall is a second peak growth season (following spring) as cooler temperatures and increased moisture help grass recover from the summer scorch.
  • Prep your lawn for snowfall with a final cut in late October or early November to reduce the risk of matting, mould, and pests.

Did you know: the time of year should change your approach to lawn and yard care? While no one is mowing their lawn during the winter months, the way your grass is prepped ahead of the first snowfall can make a big difference in how it bounces back come spring. Mowing your lawn in the summer also requires special care; high heat and direct sunlight can add stress to the turf and it may not need to be cut as frequently.

Here’s a quick and handy guide on how to switch up your mowing schedule each season.

Seasonal GTA lawn mowing schedule

When

Mower setting

Grass height

First cut of spring

High

About 3 inches

Spring (through May)

Middle

2.5 to 3 inches

Early summer (June)

High

About 3 inches

Summer (July & August)

Highest

3.5 to 4 inches

Fall

Middle

2.5 to 3 inches

Final cut

1 - 2 below middle

2 to 2.5 inches

The length of your grass and mower blade setting should depend on the time of year and grass growth conditions.

Spring: Stay on top of rapid growth

Once the snow melt is gone and the sun strengthens, your grass kicks into high growth gear. You may need to cut your grass on a weekly basis to keep it at a manageable length; too long, and grass can mat and fold, which creates breeding grounds for pests and an unkempt appearance. 

Use a high setting when cutting for the first time of the season to clear those winter-matted tips, then switch to a middle setting through May. Remember the golden rule: never cut more than a third of the blade at once so the plant can effectively recover.

Summer: Let it grow (a bit)

This is the time of year when extreme heat and stronger sun can dry out your lawn, making it tougher for it to grow back after being mowed. Reduce grass cutting to every 10 to 14 days or less often during dry spells.

When you do cut, raise the lawn mower deck to its highest setting through July and August, but don’t be afraid to reduce your cutting frequency further if you notice growth slowing; letting grass grow a bit longer can add shade to the soil and help it retain moisture.

Fall: Prep for the final cut of the year

Your lawn is feeling relief in the fall, as the harsh summer sun fades and chillier temperatures take hold. This actually prompts a second peak growth season, as grass is less stressed and better hydrated. Drop your mower blade back down to a middle setting and increase your cutting frequency to weekly if needed. Reducing the blade lets the grass retain some of its height, which helps it establish stronger roots for the winter season.

Finally, prep your lawn for frost with one final cut in late October or early November; bringing grass height to between 2 to 2.5 inches helps prevent matting and mould while under the snow cover.

Rather not push the mower yourself? There are Pros available to handle yard care on a seasonal basis. Find trusted yard work contractors today on Quartermaster.

Check out our other DIY Guides:

About The Author

Penelope Graham

Penelope Graham

Penelope is the Editor at Quartermaster. She has years of experience writing about Toronto’s unique housing and mortgage market, and is always chatting with Pros about their top tips for homeowners.

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