Percent crown dieback on trees greater than 12.7 cm (5 in.) dbh for major species on roadside tree plots in Maryland.
| Species (number of trees in study area, total) | Percent crown dieback class | |||
|---|---|---|---|---|
| None (0-5%) | Light (6-20%) | Moderate (21-50%) | Severe (51+%) | |
| Percent of sampled trees | ||||
| Acer rubrum (13) | 92.3 | 7.7 | 0.0 | 0.0 |
| Acer negundo (9) | 88.9 | 0.0 | 0.0 | 11.1 |
| Acer platanoides (5) | 60.0 | 20.0 | 20.0 | 0.0 |
| Acer saccharinum (4) | 75.0 | 25.0 | 0.0 | 0.0 |
| Quercus palustris (8) | 100.0 | 0.0 | 0.0 | 0.0 |
| Quercus alba (7) | 100.0 | 0.0 | 0.0 | 0.0 |
| Quercus ellipsoidalis (5) | 100.0 | 0.0 | 0.0 | 0.0 |
| Pyrus calleryana ‘Bradford’ (13) | 92.3 | 7.7 | 0.0 | 0.0 |
| Prunus serotina (11) | 100.0 | 0.0 | 0.0 | 0.0 |
| Cornus florida (4) | 50.0 | 25.0 | 0.0 | 25.0 |