Coccora in California
MODERATEFungus
Coccora is currently active in California. Watch your susceptible trees closely and act early.
About Coccora
Growing next to north parking lot at Lake Temescal. Growing near at least 2 death caps, the yellow cap color on this one leads me to think this is some other Amanita species but I'm not sure which. It was about the size of a tennis ball and might have grown to a pretty large size, so I feel kind of bad about disposing of it, but there were a ton of people nearby and obviously don't want a dog or a kid eating it in case it is toxic
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 Coccora. 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 Coccora in California?
Connect with ISA Certified Arborists serving California:
Browse all California arborists →Frequently asked questions
Is Coccora in California?
Coccora is currently active in California. Watch your susceptible trees closely and act early. It was first recorded here on September 8, 2026.
What does Coccora look like?
How do I treat Coccora?
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.