State agriculture officials are urging Tennesseans to be on high alert as reported sightings of the toxic, invasive hammerhead worm continue to rise across the state.

Native to Southeast Asia, the flatworm poses a serious threat to local ecosystems and home gardens due to its heavy predation on earthworms—vital organisms responsible for aerating soil, cycling nutrients, and breaking down organic matter.

How to Identify the Hammerhead Worm

• Head shape: Distinctive half-moon or fan-shaped head.

• Body: Flat, ribbon-like, typically brown or gray with dark stripes.

Safe Handling and Disposal

State officials warn residents never to touch the worm with bare hands, as it secretes a toxin capable of irritating the skin. Furthermore, do not attempt to chop or cut the worm—it can fully regenerate from severed body fragments.

Instead, follow these steps to safely remove and eliminate them:

1. Capture safely: Use gloves or a stick to place the worm into a bag or sealed container.

2. Eliminate effectively: Treat the worm with rubbing alcohol, salt, or a mixture of vinegar and citrus oil.

3. Prevent the spread: Carefully inspect new plants, potted soil, and landscaping materials before introducing them to your yard or garden.

Note: For more information on identifying and reporting invasive species, visit ProtectTNForests.org.