Laurel Wilt
HIGHRaffaelea lauricola (vectored by Xyleborus glabratus)
Overview
A lethal vascular disease of trees in the laurel family, vectored by the non-native redbay ambrosia beetle. It has devastated redbay populations in the southeastern coastal plain and threatens sassafras, avocado, and other lauraceous species.
- Type
- Fungus
- Severity
- HIGH
- Source
- USFS
Symptoms
Rapid wilting and browning of foliage that remains attached, dark streaking in sapwood, tiny beetle entrance holes with sawdust tubes (toothpick-like frass), death within weeks to months of symptom onset
Affected Species
Geographic Spread
Treatments
Propiconazole Preventive Injection
Macro-infusion of propiconazole fungicide into root flares of high-value sassafras or avocado trees before infection occurs. Provides 1-2 years of partial protection. Does not cure infected trees.
Sanitation Removal of Infected Trees
Prompt removal and destruction of infected trees to reduce beetle breeding habitat and fungal inoculum. Cover stumps to prevent ambrosia beetle colonization of cut wood.
Recommended Products & Tools
Helpful supplies for managing Laurel Wilt. Always read and follow label directions, and confirm a diagnosis before treating.
Broad-spectrum protectant for many fungal leaf and bark diseases.
Preventive spray for needle cast, leaf spots, and blights.
Sharp, clean cuts to remove affected wood — a tree-care essential.
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Frequently Asked Questions
What is Laurel Wilt?
A lethal vascular disease of trees in the laurel family, vectored by the non-native redbay ambrosia beetle. It has devastated redbay populations in the southeastern coastal plain and threatens sassafras, avocado, and other lauraceous species.
What are the symptoms of Laurel Wilt?
Rapid wilting and browning of foliage that remains attached, dark streaking in sapwood, tiny beetle entrance holes with sawdust tubes (toothpick-like frass), death within weeks to months of symptom onset
Where is Laurel Wilt currently found?
Laurel Wilt is currently active in Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, North Carolina, South Carolina, Tennessee, Texas, Virginia. It has been reported in 11 total states across the United States.
What plants are affected by Laurel Wilt?
Laurel Wilt affects Sassafras. Susceptibility varies by species.
How do I treat Laurel Wilt?
Treatment options for Laurel Wilt include: Propiconazole Preventive Injection, Sanitation Removal of Infected Trees. Treatment approaches may include chemical, biological, cultural, and mechanical methods depending on the severity and context.