Advice article

Solutions for white grub problems

Is your lawn in poor condition, with overturned soil clumps, a yellowish tint, and attracting numerous animals like skunks? The white grub problem is widespread in Quebec. Here are some simple and effective solutions to better prevent invasions and help your lawn stay dense and healthy.

Lawn damaged by white grubs

A frequent problem in Quebec

When the lawn turns yellow, lifts in patches, and attracts animals that dig through it, white grubs may be the cause. As this problem is common, it is often better to adopt good prevention and maintenance methods rather than relying solely on a one-time solution.

Quick takeaways

Chemical treatments can help, but their effect is not immediate and the problem may return.
A well-aerated, well-fertilized, and denser lawn is more resistant to white grub invasions.
Mowing longer and limiting outdoor lighting during egg-laying season can also help.
Proposed solutions

Which approaches should be favored against white grubs?

There are several ways to reduce the impact of white grubs and make your lawn less vulnerable. The goal is both to correct the situation and to strengthen the lawn in the long term.

Treatment

Chemical products

Some chemical products exist to eliminate white grubs. However, they only eliminate the eggs, which means the treatment is mainly effective the following year. If your neighbors also have this problem, the insects can return despite the treatment.

Maintenance

Aerating the land

We therefore suggest aerating your lawn, i.e., dethatching and core aerating the land. These interventions help improve the overall health of the soil and lawn.

Prevention

Fertilize regularly

Fertilizing your lawn with effective fertilizers is one of the best prevention methods. A healthy lawn will better resist white grub invasions and be less vulnerable.

Prevention

A longer lawn and less light can make a real difference

Mowing the lawn longer, at a height between 6 and 8 cm (or 2.5 to 3 inches), can help. Adult white grubs prefer a short lawn for egg-laying. Also, even if it may seem surprising, limiting outdoor lighting during the egg-laying season, between June and July, is another effective method since white grubs are attracted to light.

Best practices

Actions to adopt for a less vulnerable lawn

A strong and dense lawn resists better. By combining a few good habits, you improve your chances of preventing future invasions.

1

Dethatch and core aerate

Aerating the land helps improve soil structure and maintain a healthier lawn, making it less fragile against white grubs.

2

Keep the lawn dense

Regularly fertilize your sod with effective fertilizers to keep your lawn green, dense, and better protected against invasions.

3

Reduce attractive factors

Mow the lawn a bit longer and limit outdoor lighting during the egg-laying period to make your yard less attractive.

Summary

The right reflexes against white grubs

Good prevention and a healthy lawn remain your best allies.

Treat realistically Chemical products can help, but their effectiveness is mostly deferred to the following year and the problem can return.
Strengthen the ground Aerating, dethatching, core aerating, and regular fertilizing help your lawn resist better.
Focus on prevention A longer lawn and less outdoor lighting during the egg-laying season can limit invasions.

Need help to restore strength to your lawn?

Our team can help you choose the right maintenance and prevention solutions to keep your lawn dense, green, and more resilient. Do not hesitate to contact us for a quick response and impeccable service.