Ash > Trunk > Sunken circular to irregular area on main trunk
1 of 2
Aleurodiscus sp. Dendrothele sp.
- Sunken, relatively smooth, round to irregular area of bark on trunk or branches
- Affected bark is often lighter in color
- Small cream colored disks or saucer like fungal spore producing structures grow within affected area
- Has no affect on the overall health of the tree
- More information on Smooth Patch...
2 of 2
Perennial Nectria canker
- Sunken round to oval cankers with target shaped ridges of barkless wood on large branches or the main trunk
- Small dark sunken area on twigs that can girdle and kill the branch
- Red to reddish orange raised cushion like bumps can occasionally be seen on the edge of the canker
- More information on Perennial Nectria canker...