The 30-year and annual mortality rates for original trees planted in 1990.
| Species | Number of Original Trees Measured in 2020(%) | % Mortality 1990–2020 | Average Annual % Mortality 1990–2020 | Average Annual % Mortality 1990–2013 |
|---|---|---|---|---|
| Acer rubrum | 63 (7.2) | 12.50 | 0.44 | 0.79 |
| Acer saccharum | 58 (6.6) | 61.59 | 3.14 | 3.41 |
| Fraxinus americana | 297 (33.9) | 21.22 | 0.79 | 1.43 |
| Juglans nigra | 194 (22.1) | 47.43 | 2.12 | 1.94 |
| Ostrya virginiana | 2 (0.2) | 92.00 | 8.07 | 1.42 |
| Prunus americana | 2 (0.2) | 95.00 | 9.50 | 5.46 |
| Prunus serotina | 2 (0.2) | 33.33 | 1.34 | 0.00 |
| Quercus alba | 107 (12.2) | 47.55 | 2.13 | 2.54 |
| Quercus macrocarpa | 125 (14.3) | 45.18 | 1.98 | 1.53 |
| Quercus rubra | 13 (1.5) | 35.00 | 1.43 | 1.54 |
| Tilia americana | 14 (1.6) | 17.65 | 0.65 | 0.84 |
| Total | 877 (100) | 41.77 | 1.79 | 1.91 |