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No Love for Grubs – Spotting a Grub Worm Invasion

Last Updated: May 22, 2024

Winter’s almost over and the warmer months are coming. As much as it’s pleasant for you, the same can not be said for your lawn. You see, warm weather is the peak time for worm grub invasions and that’s never a thing to celebrate. In this article, we will discuss everything you need to know about lawn grubs and how you can protect your turf before they cause too much damage.

What Are Grub Worms?

Grub worms or garden grubs are the larvae of various beetles, including Japanese beetles, European chafers, and May/June beetles. Are grub worms good for gardens? Definitely not! Lawn grubs feed on plant roots and can cause extensive damage to lawns, gardens, and crops. A grub infestation can be difficult to control and may require multiple treatment methods, costing hours and money.

What Are the Types of Grub Worms?

Grub worms, including the European chafer, Japanese beetle, Oriental beetle, and Asiatic garden beetles, can cause significant damage to lawns. These pests feed on grass roots, leading to brown patches and attracting other wildlife like skunks and raccoons. Garden grub identification is crucial as each type has a specific life cycle, impacting the timing and method of control. Identifying the grub species helps tailor the most effective management strategy to prevent lawn damage and maintain a healthy garden.

MayJune beetle laying eggs on leaf

How Do I Know if I Have a Grub Worm Infestation?

To spot signs of grubs on lawn, look for the following: 

  1. Brown patches in your lawn or garden – Grubs feed on the roots of grass, so they can quickly kill patches of turf. If you see brown patches in your lawn or garden, it’s a sign that grubs may be present.
  2. Damaged plants – Grubs will also eat the roots of other plants, causing them to wilt and die. If you see damaged plants in your garden, you may want to consider an infestation.
  3. Animals digging in your lawn or garden – Animals like rodents and birds are attracted to grubs, so if you see them digging in your lawn or garden, there’s a good chance that they’re looking for a quick snack under the soil and at the base of your lawn.

Why Do I Have an Infestation?

There are many potential causes of grub worm infestation. One common cause is over-watering or excessive moisture in the soil. This creates an ideal environment for grubs to thrive, as they are attracted to damp conditions. Another common cause of grub worm infestation is the use of chemical pesticides and herbicides. These chemicals can kill beneficial insects that help keep grub populations in check, allowing grubs to proliferate unchecked. Finally, compacted soil can also create conducive conditions for grub growth, as it limits the ability of lawn grub killers like predators to reach and consume them.

How Much Damage Can I Expect With an Infestation?

As any gardener or farmer knows, grubs can cause serious damage to lawns and crops. The damage can be devastating, and in some cases, irreversible. Left unchecked, grubs will devour the roots of plants, causing them to wilt and die. In severe infestations, grubs can destroy an entire field or garden. This can be prevented by regularly inspecting your garden or lawn. At the first sign of an infestation, it’s necessary for you to act right away.

What Are the Best Methods for Controlling Grub Worms?

There are a number of lawn grub treatment methods that can be used for controlling grub worm infestations. These include cultural controls, such as mowing your lawn regularly and removing potential breeding sites, as well as chemical controls, such as insecticides. If you suspect you have a grub worm infestation, here is a step-by-step guide you can use to stay on top of things:

  1. Inspect your lawn for signs of grub worms. Look for brown patches of grass that are dying or dead. Grub worms will also leave behind small mounds of dirt where they have been burrowing.
  2. Water your lawn deeply and evenly. This will help to bring the grub worms closer to the surface where they can be treated.
  3. Apply a pesticide specifically designed to kill grub worms. Be sure to follow the directions on the label carefully.
  4. Repeat steps 2 and 3 as necessary. Once the grub worms are gone, your lawn should recover quickly.

Why You Should NEVER DIY Grub Worm Control

DIY grub worm control might seem tempting, but it often leads to frustration and wasted money. Here’s why you should leave it to the pros:

Misidentification: Grub worms look similar to other lawn pests, so a mistaken diagnosis means ineffective treatments. Professionals know the subtle differences, ensuring the right approach for your problem.

Incorrect Timing: Grub control requires precise timing. Too early or too late, and your efforts fail. Experts understand the grub lifecycle for optimal treatment success.

Chemical Hazards: Many grub pesticides are potent and require careful handling. Professionals are trained and licensed to apply these chemicals while minimising risks to your family and the environment.

Man in uniform wearing a knapsack insecticide sprayer

Hire Experts to Get Rid of Your Lawn Grub Worms

Knowing how to get rid of lawn grubs doesn’t mean you will be able to do it on your own. In fact, most homeowners have little to no experience in spotting an infestation. It takes a trained eye to spot these signs of grub worm invasions. Usually, people consider dry patches or dead plants a normal occurrence.

Here at Green Oasis Lawn and Reticulation, we have experts who can help you get rid of your uninvited guests and ensure they never return. We also offer other gardening services in Perth, so if your lawn has been damaged beyond repair, we’ll help you bring it back to its original condition. Explore our blogs to learn more about the benefits of investing in professional lawn care.

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