You’ve been watering your lawn, you’ve applied your fertilizer, and you mow regularly. Yet, right in the middle of the Edmonton summer, massive, ugly brown patches are taking over your yard.
Before you assume it’s just drought or a lawn disease, you need to look a little closer. Edmonton lawns are prime real estate for two highly destructive insects: Chinch Bugs and White Grubs.
These pests can destroy a perfectly healthy lawn in a matter of weeks if left unchecked. Here is your ultimate guide to identifying, treating, and preventing Edmonton’s most common lawn pests.
If your lawn starts turning yellow and then brown during the hottest, driest weeks of July and August, chinch bugs are the likely culprit.
Chinch bugs are tiny (about the size of a pen tip), black and white insects. They don't eat the grass leaves; instead, they pierce the crown of the grass plant and suck out the juices, injecting a toxin in the process that completely kills the grass.
Don't guess—test! Take an empty coffee can or soup can and cut off both the top and bottom. Push the can roughly one inch into the soil right on the edge of a brown patch (where the dead grass meets the green grass). Fill the can with soapy water and wait 5 minutes. If you have an infestation, the tiny chinch bugs will float to the surface.
While chinch bugs attack from above, grubs destroy your lawn from below.
White grubs are the larvae of various beetles (most commonly June beetles). They are plump, C-shaped, milky-white worms with brown heads. They live in the soil and feast on your grass roots.
If you have a severe, yard-destroying infestation, professional pest control treatments may be necessary to rapidly knock down the insect population. However, the absolute best way to stop pests long-term is to make your lawn an environment they hate.
Pests are opportunistic; they target weak, stressed, and poorly maintained grass. Here is how to build a pest-resistant lawn in Edmonton:
Chinch bugs thrive in bone-dry, hot thatch. By watering your lawn deeply (1 to 1.5 inches per week) rather than giving it frequent, shallow sprinkles, you drown out chinch bug habitats and encourage your grass roots to grow deeper, making them more resilient to grub damage.
Edmonton is notorious for its heavy, compacted clay soil. When soil is compacted, roots are shallow and grass is weak—the perfect target for pests. Annual Deep-Core Aeration pulls plugs of soil out of the ground, relieving compaction, improving water flow, and naturally breaking down the thick layer of "thatch" where chinch bugs live and breed.
If bugs destroyed parts of your lawn, you need to repair the bare patches through Spring or Fall Overseeding.
If pests have turned your once-green yard into a patchy, brown mess, you don’t have to start from scratch. At Neighbourhood Heroes, our premium Aeration and Overseeding packages are designed specifically to break up Edmonton clay, repair insect damage, and introduce tough, pest-resistant grass varieties to your yard.