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How to Kill Whiteflies on Plants

By Contributor ; Updated April 27, 2018
You can battle whiteflies with a hand vacuum.

Whiteflies on your plants can give you a good reason to worry. These tiny insects suck out plant juices, and a heavy infestation can weaken your plants and cause them to drop leaves. You can get rid of adult whiteflies using a basic household appliance.

Plan your attack on the whiteflies in the morning. They move more slowly when the temperature is cool, according to the University of Missouri Extension.

Turn on your hand-held vacuum. Sweep the vacuum near the foliage of your plants -- but don't touch the leaves. The whiteflies will be sucked into the vacuum.

Turn off the vacuum and remove the insect-filled vacuum bag. Slip the vacuum bag into the plastic bag and secure the end with a twist-tie. If your hand-held vacuum doesn't have a bag, keep the vacuum running and place the canister end in the plastic bag. Turn off the vacuum and pull off motor/handle section, leaving the canister inside the bag. Quickly secure the end of the plastic bag.

Put the plastic bag in the freezer for 24 hours to kill the whiteflies. Remove the plastic bag from the freezer and take out the vacuum bag or canister. Empty out the dead insects.

 

Things You Will Need

  • Hand-held vacuum
  • Large plastic bag

Tip

  • The vacuuming method is best used before the whiteflies have laid a lot of eggs, according to the University of Missouri Extension.

About the Author

 

This article was created by a professional writer and edited by experienced copy editors, both qualified members of the Demand Media Studios community. All articles go through an editorial process that includes subject matter guidelines, plagiarism review, fact-checking, and other steps in an effort to provide reliable information.