Whiteflies: What Plant Owners Should Know About This Common Pest

by Allan Wulff, MBA. Ph.D. 11/13/2022

Keeping plants at home means contending with the occasional pest. While some garden pests are just an annoyance, others can cause damage and even threaten the life of your plants. One common pest is the whitefly, which can infest both your outdoor garden and indoor houseplants. Here is a guide to everything you need to know about whiteflies:

What Are Whiteflies?

As their name suggests, whiteflies are white-colored insects resembling flies. They're slightly triangular in shape and can be smaller than a grain of rice. While there are many different species of whitefly, they are more prolific in warmer regions where they can survive winter weather.

Symptoms & Identification

Whiteflies are active during the daytime and scatter when disturbed, making them easier to spot than some other plant pests. However, the most common sign of a whitefly infestation is a sticky residue called honeydew the bugs produce when feeding.

In addition to the sticky honeydew, you might find whiteflies themselves on the underside of leaves, particularly along the veins. They also lay eggs underneath the leaves and tend to target tender, new growth on foliage plants.

Treatment & Prevention

While whiteflies can cause trouble in your garden, there are steps you can take to treat an infestation and prevent new ones from happening. Here are some ways you can rid your plants of whiteflies:

  • Hose them off - Washing the insects away with a stream of water is an efficient way to get rid of them quickly. If you find them on houseplants, take them outside for a bath with the hose.
  • Treat with insecticidal soap - Once you've washed the plant with water, use either store-bought insecticidal soap or a homemade mixture of dish soap and water. Spray the leaves and stems of the plant thoroughly.
  • Trap the survivors - Unfortunately, pests usually take more than one round of treatment to eradicate. To help capture and remove any remaining adult whiteflies, use sticky traps in your garden or potted plants.

These are just the basics of dealing with whiteflies. As with all plant pests, the best way to prevent them is to carefully inspect every new plant you buy. With the right knowledge and vigilance, you can keep your garden safe and healthy.

About the Author
Author

Allan Wulff, MBA. Ph.D.

Hello and thank you for visiting! Selling or buying real estate is very serious business! I provide extraordinary results! Prior to real estate I was President/CEO of a number of area technology companies, Vice-Chairman of the INOVA Hospital Association and have been a long time member of the Association for Corporate Growth. With a broker’s training and experience, you get more than just a realtor agent. My negotiating skills and astute problem solving capabilities, honed by executive experience, have proved extremely effective for my clients in achieving their dreams and real estate goals in this current complex and fast paced market. As a long time Northern Virginia resident my experience will benefit you whether you are buying a home or selling a home or are a returning client checking out the many homeowner resources my associates and I offer. Buying a home? I look forward to helping you select the home of your dreams by taking time to listen to your needs and desires. Selling a home? My real estate expertise and many effective marketing programs will give you the exposure and edge you need to sell your home quickly for top dollar. Testimonials. I appreciate the opportunity to continue to serve you and hope you take advantage of the valuable resources I provide. Come back to visit often! I consider this community an excellent place to reside and would love to share with you my enthusiasm for the many neighborhoods in the area. I pride myself on providing unparalleled service and look forward to developing a long-term relationship with you. Please feel free to contact me if you would like to discuss how I can best assist you with your real estate goals. Sincerely, Allan Wulff