Andre CampbellIf you’re looking for natural ways to get rid of corn earworms, you’ve come to the right place. There are a few different methods you can try, and we’ll go over all of them here.
The corn earworm (tomato fruitworm) is one of the most common pests in the garden, and it loves to feast on corn, cotton, tomatoes, soybeans, and other crops [1].
If you have a corn earworm infestation, you’ll need to act fast to get rid of them. The good news is that there are several natural methods available to help control these pests.
Identification
Corn earworms are damaging pests of sweet corn, field corn, and other vegetables. They are the larvae (caterpillars) of a small moth.
These common little pests are easy to identify.
The caterpillars are often green to pinkish-brown, and some are nearly black. They can also grow up to 2 inches long.
Check for damage to the corn ear, such as holes or chewing. Also, look for the caterpillar inside the ear of corn, often near the tip.
How to Get Rid of Corn Earworms Naturally
Below are some tips on how to get rid of them using home remedies and other natural methods.
1. Natural Predators
These pests have a few natural enemies that can help keep their population under control. Introducing beneficial insects into your garden will help keep the corn earworm population in check.
Green lacewings, ladybugs, and parasitic wasps are all effective predators of corn earworms. What’s more, you can find them at your local garden center or online.
Damsel bugs and minute pirate bugs also make a feast out of corn earworm eggs and larvae.
2. Bacillus thuringiensis
Bacillus thuringiensis, or Bt for short, is a naturally occurring bacterium that can be used to control worms on corn.
This bacterium produces a toxin that is fatal to corn earworms, making it a safe and effective way to get rid of these pests organically.
Moreover, Bt can be purchased in powder or liquid form and is safe to use around humans and animals. Just mix it with water and spray it on your corn plants according to the instructions that come with your purchase.
3. Diatomaceous Earth
To prevent corn earworms from infesting your crops, an effective organic control method is to apply diatomaceous earth.
The product is composed of the fossilized remains of tiny aquatic creatures known as diatoms. When these creatures die, their shells fall to the bottom of the water and accumulate over time.
DE’s particles are razor-sharp and can cut through the soft bodies of sweet corn worms and other pests, making it an effective pesticide. Just dust your corn plants with it, and it will keep away the earworms.
4. Beneficial Nematodes
Beneficial nematodes kill pests, such as corn earworms. They’re safe to use around humans and pets, and they’re effective against a wide range of pests.
They are also easy to apply. Just mix them with water and spray them onto the corn silks. You can find these nematodes online or at your local garden center.
5. Spinosad
Spinosad is a natural product that is derived from a soil bacterium. It is a pesticide that has been shown to be effective against corn earworms.
It’s also highly effective against several other garden pests, such as leaf miners, fire ants, and thrips. Monterey Garden Insect Spray is a good brand.
6. Oil
To control worms in corn, you can also try using oil. This home remedy is said to be effective in killing these pests.
You can either use vegetable oil or mineral oil. Apply the oil to the tip of the corn ear and leave it there.
However, wait until the silks have turned brown on the ends before applying. The oil will suffocate the critters.
7. Close the Top of the Ear
Another smart move to keep corn earworms out of your corn is to close the top of the ear. Close the top of the ear with a clothespin or a piece of string.
The moths will lay eggs on corn silks, but the young caterpillars will not be able to burrow into the ear.
8. Pick Them Off
There’s nothing worse than finding a big, fat corn borer worm munching away on your precious cob. But there is an easy way to fight back, and that is by picking them off.
This method is effective, but it does require some patience.
You’ll need to inspect each ear of corn and remove any worms you find. But don’t worry; the worms won’t hurt you.
9. Till the Soil
One other corn worm prevention method is to till the soil around your corn plants to disrupt the corn earworms’ life cycle. This will also help control any other pests that might be lurking in your garden soil.
However, be sure to do this in the early spring to expose the pupae to predators. And if you see any worms on your plants, pick them off and dispose of them.
10. Soapy Water
Soap may not be the first thing that comes to mind when you think of getting rid of tomato fruitworms or any pests, but it can be surprisingly effective.
To get rid of these pesky critters, mix some soap and water and spray it on your corn plants. It will kill corn worms by suffocation.
Takeaway
Nothing ruins a good ear of corn like finding corn bugs inside. These pests can do a lot of damage to your crops if not controlled.
But before you reach for synthetic pesticides, consider the natural options above.
Sasha Campbell
Would the Diatomaceous Earth hurt the bees or other pollinators?
Only if they crawl over it, so apply to leaves only and not flowers.