| anthracnose |
Gnomonia spp. |
1 |
| bacterial wetwood |
Enterobacter nimipressuralis |
1 |
| black rot |
Ceratocystis fimbriata |
2 |
| butternut canker |
Sirococcus clavigignenti-juglandacearum |
2 |
| Cenangium cankers |
Cenangium spp. |
2 |
| clinker polypore |
Inonotus obliquus |
2 |
| cold injury (low temperature) |
|
1 |
| Cryptosphaeria cankers |
Cryptosphaeria spp. |
1 |
| Dutch elm disease |
Ophiostoma ulmi |
3 |
| Eutypella canker |
Eutypella parasitica |
3 |
| galls |
|
1 |
| Hypoxylon canker of aspen |
Entoleuca mammata |
6 |
| iron deficiency |
|
1 |
| leaf scorches |
|
2 |
| oak anthracnose |
Apiognomonia errabunda |
3 |
| oak wilt |
Ceratocystis fagacearum |
6 |
| Phellinus heartrots |
Phellinus spp. |
1 |
| Septoria leaf spot and canker |
Septoria musiva |
2 |
| shepherd's crook leaf and shoot blight |
Venturia tremulae |
1 |
| smooth patch of oak |
Aleurodiscus oakesii |
1 |
| tar spot of maple |
Rhytisma acerinum |
1 |
| Venturia leaf scabs and blights |
Venturia spp. |
1 |
| willow scab |
Venturia saliciperda |
1 |
