Pecky Rot
Postia amara
1 host plant
Last updated
You'll see pecky rot in cedar and other conifers as yellowish-brown discoloration in heartwood, creating a characteristic pecked appearance. Trees with conks or shot-hole cups should be felled and removed when possible. This decay-causing fungus persists in wood for years. Prevention through proper drainage and maintaining tree health is essential. Monitor trees for signs of infection. Rot diseases are difficult to manage once established. Focus on prevention through proper culture and site selection.
Trees with conks or shot-hole cups should be felled and/or removed. In forestry, lower rotation age for incense-cedar.
Quick Reference
Management
High moisture, especially in ravines; preexisting wounds and fire scars increase risk
Cultural Controls
- Trees with conks or shot-hole cups should be felled and/or removed.
- In forestry, lower rotation age for incense-cedar.
- Reference Goheen, E.M., and Willhite, E.A. 2006.
- Field guide to the common diseases and insect pests of Oregon and Washington conifers.
- R6-NR-FID-PR-01-06.
- Portland, OR.