Browse resources Displaying 1 - 2 of 2 resources Credit: Oregon Department of Forestry (Cropped from original) Aggressive local efforts were key to limiting spread of sudden oak death disease in Oregon Limiting sudden oak death’s spread in southern Oregon has proved to be a success. Chris Branam | Aug 19, 2019 | News story Photo: John Punches (Cropped from original) How to determine what's ailing a tree How drought affects trees is complex. Drought-stressed trees become susceptible to insects and diseases that are naturally present but typically at low levels. Here are steps to take to identify what's ailing a tree. Norma Kline | Jun 2018 | Article