 Spotted lanternfly (SLF for short) is a destructive sap-feeding planthopper. SLF is a relatively new plant pest to the United States. While just two small populations were verified in Fairfield County in 2020, it is now found across CT and widespread in Fairfield and New Haven counties.
A pretty distinctive insect, adults are about one inch long and a half inch wide. Their forewings are tan with black spots. Hindwings, noticeable when wings are spread, are colorful red and black patches separated by a white patch. Adults are active from July to November and will crawl, jump, or fly short distances.  A sign posted at an actively managed Knotweed site. ©2025 NewtownKnotweed.org We asked Hannah Hudson, founder of the Worldwide Japanese Knotweed Support Group to answer
commonly asked questions for battling Japanese Knotweed. Hannah started the Support Group in 2015, after discovering that accurate data and up-to-date guidance was lacking in the U.S. compared with the United Kingdom. |
AuthorThe Newtown Conservation Commission actively works to encourage healthy habitats by increasing the diversity of our native wildlife and vegetation, while providing information on the threats posed by invasive plant species. Archives
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About the CommissionThe Newtown Conservation Commission is dedicated to the acquisition, preservation and protection of 2,000 acres of town-owned open space. In addition, the Commission is actively working to encourage healthy habitats and increase the diversity of our native wildlife and vegetation.
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3 Primrose Street Newtown, CT 06470 (203) 270-4276 |