Pacific Northwest Plant Disease Management Handbook

Cedar, Port Orford (Chamaecyparis lawsoniana)-Seiridium Canker

  • Facebook logo
Latest revision: 
March 2024
Image related to Cedar, Port-Orford (Chamaecyparis lawsoniana)-Seiridium Canker

Seiridium canker on Port-Orford-Cedar. Tree has been inoculated with the fungus. Picture shows death of tissue above cankered stem.

Danielle Martin
Image related to Cedar, Port-Orford (Chamaecyparis lawsoniana)-Seiridium Canker

Seiridium canker on Port-Orford-Cedar. Tree has been inoculated with the fungus.

Danielle Martin

See:

Cypress (Cupressus spp.) - Canker

Pscheidt, J.W., and Ocamb, C.M. (Senior Eds.). 2024 Pacific Northwest Plant Disease Management Handbook.
© Oregon State University.

Use pesticides safely!

  • Wear protective clothing and safety devices as recommended on the label. Bathe or shower after each use.
  • Read the pesticide label—even if you’ve used the pesticide before. Follow closely the instructions on the label (and any other directions you have).
  • Be cautious when you apply pesticides. Know your legal responsibility as a pesticide applicator. You may be liable for injury or damage resulting from pesticide use.

Trade-name products and services are mentioned as illustrations only. This does not mean that the participating Extension Services endorse these products and services or that they intend to discriminate against products and services not mentioned.

H - Home garden packaging commonly available.     O - Acceptable in organic production.