Botryosphaeria obtusa, Valsa spp. and other fungi
- Leaves on random branches wilt, turn yellow then brown during the growing season
- Random dead branches seen throughout canopy
- Infected branches don’t leaf out in spring
- Cankers are brown to black sunken areas on branch that may have cracked bark and discolored sapwood
- Common on trees stressed by drought, winter injury, wounds, insect feeding or other factors
- More information on Branch cankers...