Overview
4500' My first impression was that it was infected with bolete mold (*Hypomyces chrysospermus*) but at closer inspection, it appears to be just an odd shaped king bolete (*Boletus edulis*). Was very firm to the touch. Found several more *B. edulis* nearby
- Type
- Fungus
- Severity
- MODERATE
- Source
- iNaturalist
Symptoms
Geographic Spread
Treatments
Fungicide Application
Apply systemic or contact fungicide at the first sign of infection. Repeat applications may be needed during wet weather. Follow label rates and timing.
Sanitation and Pruning
Remove and destroy all infected leaves, branches, and fallen debris. Improve air circulation by thinning dense canopy growth. Sterilize pruning tools.
Soil and Moisture Management
Ensure proper drainage, avoid overwatering, and apply mulch to reduce soil splash. Many fungal pathogens thrive in persistently wet conditions.
Recommended Products & Tools
Helpful supplies for managing King Bolete. 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 King Bolete?
4500' My first impression was that it was infected with bolete mold (*Hypomyces chrysospermus*) but at closer inspection, it appears to be just an odd shaped king bolete (*Boletus edulis*). Was very firm to the touch. Found several more *B. edulis* nearby
What are the symptoms of King Bolete?
Where is King Bolete currently found?
King Bolete is currently active in Pennsylvania, Oregon, Washington, California, Wyoming, New York, Alaska. It has been reported in 7 total states across the United States.
How do I treat King Bolete?
Treatment options for King Bolete include: Fungicide Application, Sanitation and Pruning, Soil and Moisture Management. Treatment approaches may include chemical, biological, cultural, and mechanical methods depending on the severity and context.