How to Kill Earthworm Pests

Save

Earthworms can be beneficial to have around, or they can be pests. The beneficial qualities of having earthworms in a yard or lawn come from their ability to aerate soil and help decompose organic matter through the deep tunnels they dig in the soil. However, these tunnels can leave aesthetically unappealing mounds of clumpy dirt, otherwise known as castings, on lawns. If the unappealing earthworm mounds are outweighing the functionality of the earthworm tunnels, then earthworms become pests, and pests are best gotten rid of.

Things You'll Need

  • Insecticide
  • Fertilizer
  • Yard tools
  • Gloves
  • Fungicide (optional)
  • Use a carbamate insecticide to kill the earthworms. Some carbamate insecticides include carbaryl (Sevin), bendiocarb (Turcam) and propoxure (Baygon). Use about as much insecticide to kill the earthworms as you would to kill grubs, which is generally 4 to 8 lb. of active ingredient per acre of lawn, suggests the Sports Turf website.

  • Reapply the insecticide each season to continue to keep earthworm populations low. The insecticide will not reduce the earthworm population for more than a season at a time. For further instructions on mixture and application period, consult the insecticide manual, container or manufacturer.

  • For a natural approach to killing earthworms, use a fungicide, such as benzimidazole fungicide or carbamate fungicide. Some benzimidazole fungicides include benomyl, thiabendazole and thiophonate-methyl. Carbamate fungicide brands include Bromosan, Lesco Thiram, Spotrete and Thiramad. Consult the fungicide manaul, container or manufacturer for further application details because each fungicide varies in strength and duration.

  • To reduce the earthworm food supply, and, therefore, reduce the earthworm population, gather and remove grass clippings from the lawn. This will also take away from the soil nutrients, informs the North Carolina Cooperative Extension, so it is important to add fertilizer to the lawn to account for the decrease in clippings, which are generally considered a form of fertilizer (an especially cheap form at that).

  • Make sure that the area where the earthworms are living has proper drainage. Earthworms tend to thrive in poor-drainage areas, and reducing water and moisture buildup will help keep their population in check.

Tips & Warnings

  • Killing earthworms deprives your lawn of their nutrients, so always supplement a newly earthworm-free lawn with fertilizer to keep it in healthy condition.
  • Make sure to wear proper safety equipment, including gloves and long sleeves and pants, when working with chemicals such as insecticides. Avoid inhaling or coming into skin contact with insecticides.

Related Searches

References

  • Photo Credit Jupiterimages/liquidlibrary/Getty Images
Promoted By Zergnet

Comments

You May Also Like

  • How to Kill Lawn Earthworms

    Earthworms help prevent soil from compacting and thatch from building up in your lawn, but their castings can ruin a smooth, uniform...

  • How to Exterminate Earthworms

    Earthworms benefit the garden by enriching and aerating the soil. However, in some parts of the garden like the lawn, the worms...

  • How to Identify Earthworm Eggs in Soil

    Earthworms lay eggs inside amber-colored cocoons their bodies produce. Premature eggs that come out of their protective cocoons will shrivel and die....

  • Will Vinegar Kill Garden Worms?

    There are about 2,700 species of earthworms, ranging in size from about ½ inch long to about 3 to 4 feet long...

Related Searches

Check It Out

How to Make a Vertical Clay Pot Garden

M
Is DIY in your DNA? Become part of our maker community.
Submit Your Work!