When to Aerate a Lawn in Ontario

Weeds sprouting along a concrete edge in a lawn area during warm season.

Aerate an Ontario lawn in early fall, while the grass is still growing and well ahead of the first frost, which averages October 16 at Toronto Pearson…

When to Dethatch a Lawn in Manitoba

Weeds sprouting along a concrete edge in a lawn area during warm season.

In Manitoba, the best window to dethatch is late summer, before the first fall frost. The second best is late spring, once the grass is truly growing.