Dethatching killed my lawn

Thick thatch can affect the growth of the grass in your yard, but you might be asking when is the best time to dethatch a lawn to improve its health.

Thatch occurs in every lawn and a thin layer of the dead turf material forms as part of the natural growth process.

If it’s less than half an inch (1.27cm) in depth, it’s beneficial to the lawn’s health. But a layer that’s thick isn’t good for the grass and needs attention at the right moment in the gardening calendar.

Here, we look at when you should dethatch a lawn to keep the grass included in your backyard landscaping ideas healthy and verdant.

When is the best time to dethatch a lawn?

The best time to dethatch a lawn is when it’s actively growing.

When to aerate lawn

The soil should also be moderately moist. Generally, it’s best to have mowed a couple of times before dethatching.

Cool season grasses need to be dethatched in early spring or early fall. Note, though, that the grass should still be growing if you take the latter option as it needs to re-establish before frost season.

Warm season grasses

when should you dethatch your lawn in ontario

when should you dethatch your grass