What is a Grub Worm?

A grub worm is a type of earthworm that lives in moist soil. They are often found in gardens and lawns because they like to eat leaves, roots, flowers or other plants. The worms can cause serious damage if allowed to infest your yard and garden. Here’s how you prevent a grub worm invasion and what you can do if it gets out of control..

A grub worm is a type of earthworm that lives in moist, dark places and eats decaying plant material. They can be found in soil, compost piles, and rotting logs. The grub worms turn into larvae when they are adults. Read more in detail here: what do grub worms turn into.

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Grub worms are lawn-damaging insects also known as “grubs,” “lawn grubs,” “white grubs,” and “turf grubs.” They aren’t too much of a problem in tiny doses. However, an infestation of them may harm a lawn and must be dealt with.

The larval stage of certain beetles is known as grub worms. They are white c-shaped insects with six legs around its head that are.25-1inch long. They come in late July and early August and devour the roots of grasses, causing lawn damage.

Grub worms may be found in Japanese, May, June, and Oriental beetles and are mostly utilized for reptile food and fish bait. To discover more about these lawn pests, keep reading.


Contents Table of Contents

  • What is a Grub Worm, exactly?
  • Grub Worm Symptoms
  • Grub Worms: How to Get Rid of Them
  • Grub Worms: How to Get Rid of Them
  • Conclusion


What is a Grub Worm, exactly?

The larval stage of some beetles is referred to as “grub.” Grub worms are wrinkled, little white c-shaped bugs that live in the soil and eat the roots of grasses and other plants. They may range in size from.25 to 1 inch, and are sometimes a little longer. They have a transparent exoskeleton, which makes it difficult to discern what they are since their food is visible through them.

They hatch from their eggs in July and burrow into the earth in the fall to escape the cold. They will reappear in the spring and continue to consume the grass roots. They then go to the pupal stage. They turn into beetles in late June and early July, and the cycle begins all over again. 

Grub Worm Symptoms

It might be difficult to identify whether grub worms are present. In August, irregularly shaped patches of brown grass are the best way to tell. In drought-prone areas, it’s commonly mistaken for drought damage, however unlike drought damage, the grass can be simply pulled away from the soil since the grubs have devoured all of the roots. If you suspect grub worms, pulling at the grass is a good way to get rid of them.

The following are some telltale symptoms of grub-infested lawns:


  • Birds in large flocks
  • Patches of grass that have been turned over and destroyed
  • An unusually huge number of moles has been discovered.
  • Skunks and damage caused by skunks
  • Lawn with a spongy texture

It’s time to start the eradication procedure if a square foot of dirt can be readily turned over or if there are more than six observed grubs in a damaged region. However, prevention is usually simpler and more helpful than curing, so be sure to keep them in control with regular care.

Grub Worms: How to Get Rid of Them

Beetles like short grass with compacted soil to deposit their eggs in. It is essential to keep a well-kept lawn in order to avoid them from appearing. A healthy grass will be able to endure small pests and will be able to outlast any harm.

Keep the following in mind to help avoid a grub worm infestation:

  • Grass should not be trimmed shorter than 2 inches.
  • Water lightly, but thoroughly saturate the soil. This promotes grass to develop deep, robust roots.
  • The soil should be aerated.
  • Fertilize
  • Mulch

However, these pests may develop regardless, or there may be a new place with an existing infestation that has to be addressed. Start eliminating them if this is the case.

Grub Worms: How to Get Rid of Them

Grub worm infestations may be difficult to eradicate once they have become established. First and foremost, put in place effective prevention measures. Water the grass well, but not so much that it becomes soggy. Begin aerating, fertilizing, and keeping the grass after that. Then begin to work on eradicating the bugs themselves.

Natural Treatments

The best Natural Treatments for getting rid of grubs is by introducing predatory species and getting them to do the work themselves.

Here are some Natural Treatments for the eradication of grubs:

  • Nematodes
    • Tiny worms that dwell in the dirt and eat many kinds of animals
  • spore with a milky appearance
    • It’s necessary to have a host grub.
    • It takes a few years to establish itself in the soil, but the benefits may endure up to ten years.
  • Birds should be encouraged.
    • Feeders for birds that include high-quality seed
    • Birdbaths that are maintained in good condition

Now. Let’s look at chemical solutions for a moment.

Chemical Treatments

If you’re introducing predatory bugs, chemical treatments aren’t recommended since they’ll kill them as well. Start searching for them in late July and early August, when they are initially emerging and beginning to feed, since this is when they are most vulnerable to treatments. 

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The following components will be used in chemical treatments:

  • Carbaryl
  • Halofenozide
  • Imidacloprid

Always read the packaging directions before applying the product; otherwise, chemical burns can do more damage than good, which will lead to a plethora of additional problems.

Synthetic fertilizers can also be used in place of organic fertilizers. When the grubs eat the fertilized roots, the grubs are usually poisoned, but the grasses are strengthened. In the worst-case scenario, hiring a professional to deal with massive infestations may prove to be more beneficial, convenient, and effective.


Grub worms are lawn-destroying insects that emerge in July and August. Because a well-kept lawn is capable of combating them on their own, it’ll probably be difficult to tell if there’s much of an infestation at all. Keeping up with regular lawn upkeep is all it takes to keep these critters at bay. The first sign of their presence will be uneven, brown grass that is simple to pick up.

Japanese, May, June, and Oriental beetles will not deposit their eggs in the grass if the grass is kept at 2 inches or higher, preventing the bugs from consuming the roots. If they become a nuisance, however, predators, insecticides, and synthetic fertilizers may be used to help remove them.


A “grub worm” is a type of parasite that infects the larvae of certain beetles. The grub worms will eat the internal organs and tissues of the beetle, which can weaken or kill it. Reference: what do grub worms eat.

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