General Rule
During peak growing season (May–September), most Canadian lawns need mowing once per week. In cooler shoulder months (April, October), every 10–14 days is usually sufficient.
Adjust for Conditions
- After heavy rain: grass grows faster — you may need to mow twice a week
- During drought: growth slows — extend to every 10–14 days
- Shaded areas: grow slower than full sun — mow less frequently
The 1/3 Rule
Never cut more than one-third of the grass blade height at once. If you missed a week, raise the mower deck and cut in two passes over a few days.
