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How do you treat laurel wilt?

Author

Emily Baldwin

Updated on April 04, 2026

How do you treat laurel wilt?

Currently, no treatment has been developed that can cure laurel wilt or protect trees from infection. If infected, trees should cut down and chipped to prevent further spread of these beetles and fungus.

What trees are affected by laurel wilt?

Laurel wilt is a disease that causes tree death, mainly affecting redbay, sassafras, and avocado trees. Laurel wilt is caused by two nonnative, invasive species from Asia: the redbay ambrosia beetle (Xyleborus glabratus) and an associated fungus (Raffaelea lauricola).

What causes laurel wilt?

Laurel wilt is a deadly disease of redbay and other native plants in the laurel family. The disease is caused by the fungus, Raffaelea lauricola, which is introduced into host trees by a non-native insect, the redbay ambrosia beetle, Xyleborus glabratus.

How do I stop my Laurel from wilting?

The best way to prevent the spread of laurel wilt is to avoid movement of firewood or other untreated timber. Tennesseans are urged to monitor their sassafras trees for browning of leaves, leaf loss, and staining in the inner bark.

Is laurel wilt disease in California?

These beetles spread a fungus (Raffaelea lauricola), causing Laurel Wilt. This disease is currently NOT found in California, and is presently limited to Southern states, however, the transportation of firewood is a threat to increasing its distribution, risking California avocados.

Why are my sassafras trees dying?

But the Sassafras tree is under threat from laurel wilt disease. The disease is caused by a fungus that is introduced into host trees by a nonnative insect, the redbay ambrosia beetle. Once the fungus is unleashed it can kill the tree within a few weeks.

Is my sassafras tree dead?

Leaves rapidly wilt, turn reddish-brown, and drop from the tree in mid to late summer. Entire clumps of wilted or dead sassafras trees, as the disease spreads through roots. Dark staining in the sapwood, exposed by removing bark. Tiny ambrosia beetle exit holes in the bark.

What is killing my sassafras trees?

How long do sassafras trees live?

They rarely survive more than 30 years except on moist sites. On relatively dry sites, sassafras does not survive long enough to occupy upper canopy positions.

What kills sassafras trees?

Insects and wildlife use it as a food source. But the Sassafras tree is under threat from laurel wilt disease. The disease is caused by a fungus that is introduced into host trees by a nonnative insect, the redbay ambrosia beetle. Once the fungus is unleashed it can kill the tree within a few weeks.

Do sassafras trees like sun or shade?

Sassafras trees will grow in part shade to part sun and are soil tolerant. They will grow in clay, loam, sand and acidic soils, provided there is adequate drainage.

Why is sassafras banned?

Well, sassafras and sarsaparilla both contain safrole, a compound recently banned by the FDA due to its carcinogenic effects. Safrole was found to contribute to liver cancer in rats when given in high doses, and thus it and sassafras or sarsaparilla-containing products were banned.