Barrow's Bolete in Washington
MODERATEFungus
Barrow's Bolete is currently active in Washington. Watch your susceptible trees closely and act early.
About Barrow's Bolete
Young specimen found right next to older/larger specimen with very pale to white cap. With spruce, Douglas fir, and pine.
Symptoms to watch for
Treatment options
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 Barrow's 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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Need help with Barrow's Bolete in Washington?
Connect with ISA Certified Arborists serving Washington:
Browse all Washington arborists →Frequently asked questions
Is Barrow's Bolete in Washington?
Barrow's Bolete is currently active in Washington. Watch your susceptible trees closely and act early. It was first recorded here on June 27, 2026.
What does Barrow's Bolete look like?
How do I treat Barrow's Bolete?
Options include: Fungicide Application, Sanitation and Pruning, Soil and Moisture Management. Confirm the diagnosis before treating, and consider a certified arborist for high-value trees.