The kudzu bug, an invasive pest, has been a significant concern in soybean cultivation in the southeastern United States since 2009, particularly in Georgia, North Carolina, South Carolina, and Alabama. Beyond its impact on agriculture, the kudzu bug proves to be a nuisance to homeowners and outdoor enthusiasts during both early spring and fall. In the winter months, the kudzu bug becomes inactive and actively seeks overwintering sites in the fall.

Credit: Worrel Diedrick, Florida A&M University.

If you observed a substantial number of small, greenish, round, flattened insects on the exterior walls of your home, there is a likelihood that you, like many others in your community, were visited by the kudzu bug. This relatively new invasive insect from Asia has become an unexpected guest for numerous residents and business owners, as it landed on homes and other structures in search of suitable overwintering sites.

Fortunately, the overwintering flights of the kudzu bug are relatively brief, lasting only a few days in the fall. However, if your residence becomes one of their chosen landing sites and they manage to infiltrate by crawling into cracks and crevices, the issue may escalate to the interior of your dwelling, posing a more significant problem than their presence on the exterior.

Kudzu Bug Habitat

Outdoors, kudzu bugs tend to congregate in gaps under the bark of trees, gaps under the siding of homes, and higher elevations such as fascia boards and gutters on the edges of homes. They are attracted to light-colored surfaces, with a particular fondness for white. Kudzu bugs will congregate on white siding, white cars, or white attire. In early fall, they often gather on light-colored exterior walls before moving into gaps and cracks, seeking shelter and warmth for overwintering.

To mitigate the possibility of infestation, the most effective preventive measure is to seal all openings where kudzu bugs could potentially enter your dwelling using caulk. While insecticides might be considered for control, it’s crucial to note that this option is challenging to time accurately and often proves mostly ineffective in addressing the problem.

For the more information specific to kudzu bug in Florida, consult your extension office.

Supporting information for this article can also be found by clicking the link below.

The Kudzu Bug – UF/IFAS Pest Alert (

Kudzu Bugs – Will They Overwinter in Your Neighborhood? – UF/IFAS North Florida Research and Education Center

Donna Arnold