How To Get Rid Of Grubs?

If your lawn in dying in large patches that tear up easily, then chances are you have a grub problem. The grubs you have are the larvae of Japanese, June, or European chafer beetles though the Japanese beetle is the most common. The grub looks like a fat “C” wiggling in your lawn. You will probably notice the problem in August as the beetles lay their eggs in mid-July, and they hatch in August, eating your grass’s roots as they wiggle their way to the surface. This can be prevented.

Before you do anything, you should make sure grubs are your actually problem. To do this, find a square foot of lawn on the edge of a brown patch and healthy grass. Using a shovel, cut three sides of your square and pull the grass back, like a carpet. If this happens easily, the roots are gone because they have been eaten by the grubs. If you see grubs, count them. If there are more than five, you have a definite problem.

GrubsYou want to treat the lawn in July right after the beetles have laid their eggs. There are a several things you can do to stop the eggs from hatching. First, don’t cut your lawn too short. Japanese beetles don’t like to lay eggs in grass that is taller than two inches. When you seed your lawn in the spring and fall, over-seed it. This will make the grass too thick for the beetles. Fertilizer used at the same time will help as well. And if you hate to rake those fall leaves, you are in luck. A layer of dead leaves over the winter also stops the beetles from inhabiting your lawn.

Grubs need water, so don’t overwater, and when you do water, water a lot at once instead of a little water over a couple of days. You can also treat your lawn in the first two weeks of July with insecticides containing inidacloprid or halofenozide that poison the grubs as they are hatching.

However, if you would prefer an organic solution, you can try Milky Spore, an environmentally safe disease that gets rid of the beetles themselves, not the grubs. This will need to be applied in the spring, summer, and fall for two years, insuring that your lawn with carry the disease for at least ten years.

Another organic solution is called Neem Oil, a botanical pesticide that will stop the beetles from laying eggs, growing or feeding. There are tiny worms called Nematodes that release bacteria into the soil that is lethal to the grubs. The worms are applied with a spray and are even beneficial to your lawn. The spray can be purchased from gardening stores and online garden supply catalogs.

Category: Gardening, Home & Garden

One Comment on “How To Get Rid Of Grubs?”


Owen wrote:

I have grubs in my lawn, I used something to kill them how long should I keep my dog off the lawn?

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