I have been a landscaper for the last nine years and I have learned a lot about grub worms. Knowing how to get rid of grubs in your lawn is easy, once you know a little bit more about them. Grub worms live underneath the surface of your soil and eat out the roots.
Most of the time when you find damage caused by grub worms, it is the lawns that are unhealthy, or it get too much water. Japanese and Asiatic beetles do most of their damage during the fall. May and June beetles do their damage during the spring and early summer. Once you know you have grubs in your lawn, it is a good idea to determine which kind you have so that you can kill them easier
The type of grass you have in your lawn is awesome because it grows both the roots and shoots from the crown of the grass. This allows your grass to grow back every time you mow it. Likewise, your grass has the ability to repair itself if the roots get eaten by grubs. The roots will simply grow back from the crown. Most of the time, the grubs don’t do enough damage to kill the lawn all on their own. But if it isn’t watered every day, then the lawn can die of drought damage because it doesn’t have very many roots left.
How to Know if You Have Grubs in Your Lawn
A lot of lawns have grubs in them, but a small percentage of lawns have so many grubs that they damage the lawn. Usually, when there are more than 8 to 10 grubs per square foot of lawn, you start to see some permanent damage.
The first test that you can use, you can simply carefully dig out an area of your soil where you think you might have grubs. As you are digging out a 12″ x 12” square, count the number of grubs that you find in the soil. Earthworms don’t count, but any type of white or gray grub does. If you find more than 8 to 10 grubs, then you need to treat your lawn with grub killer right away.
The second way to test your lawn for grubs is to saturate your lawn. Take any area of your lawn that is 3′ x 3′ square and supersaturated with water. You can count the number of grubs that rise to the top of the soil. Once you do, count them by putting them into a plastic container.
How to Get Rid of Grub Worms in Your Lawn: Three Methods
The first method that will help you get rid of lawn grubs is to apply a grub killer. Make sure that the type of grub you have is listed on the label for the pesticide. If you can, it is better to use a selective pesticide than a non-selective one. Pesticides that are also IGR ( insect growth regulators) are safer to use around pets and better for the environment. If you have a layer of fat in your lawn, you probably want to get rid of it before you apply the pesticide.
The second method that will help you get rid of Grubs is the iron maiden approach to grub control. This method is completely organic, or at least chemical free. This method is called the spikes of death. It won’t get rid of all the Grubs in the lawn, but it will get rid of a significant percentage of them. Basically, you need to wear lawn aerator shoes on your feet and walk across the lawn multiple times. Since these shoes have 2 inch spikes on the bottom, spaced every half of an inch, they can be pretty effective at killing the Grubs and turning them into useful plant fertilizer.
I have also heard people say that using beneficial nematodes is a great way to get rid of the Grubs. Nematodes are basically small worms that can be parasitic to a lot of grubs. Nematodes work best when there is a large population of grubs to serve as hosts in your lawn. The nice part is that these nematodes typically don’t affect other animals.
When you’re learning how to get rid of grub worms, the fourth way to do this is to use milky spore disease. The milky spore disease also works best when there is a large population of them in a small area. Milky spores can kill the grubs and can remain in your soil for quite a while. As long as it is in your soil, it will help serve as a deterrent to future grub infestations.
How to Prevent Grub Problem in Future
Don’t leave dog poop on your lawn. Grubs love to eat that stuff. This is one of the most common reasons why people develop grubs in their lawn. Grubs are attracted to this fecal matter and they often lay their eggs in it. Once the eggs hatch, you’ll develop a severe problem with lawn grubs.
One of the best ways to prevent grubs damage from occurring is to make sure that your lawn is really healthy. Most of the time if your lawn is healthy, the grubs are going to do enough damage to destroy it. Make sure that you fertilize your lawn at least once every other month while you are mowing it. Also, make sure that you aerate your lawn every year so that you all have stronger roots. Additionally, you want to make sure that you mow your lawn at least once every 10 days. Doing all these things will help you to have a healthier lawn, and make it a lot harder for grubs to damage it.