Tricholoma atroviolaceum in Washington
MODERATEFungus
Tricholoma atroviolaceum is currently active in Washington. Watch your susceptible trees closely and act early.
About Tricholoma atroviolaceum
reddish grey staining on stipe
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 Tricholoma atroviolaceum. 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.
As an Amazon Associate, TreeIssues may earn a commission from qualifying purchases made through these links — at no extra cost to you.
Need help with Tricholoma atroviolaceum in Washington?
Connect with ISA Certified Arborists serving Washington:
Browse all Washington arborists →Frequently asked questions
Is Tricholoma atroviolaceum in Washington?
Tricholoma atroviolaceum is currently active in Washington. Watch your susceptible trees closely and act early. It was first recorded here on October 25, 2026.
What does Tricholoma atroviolaceum look like?
How do I treat Tricholoma atroviolaceum?
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.