Salix nigra Black willow Salicaceae
| FIA distributions (499 counties) quartiles: | min | 1st | mean | median | 3rd | max | rank |
| Diameter, cm (1026 plots) | 0.3 | 16.0 | 32.2 | 30.0 | 44.3 | 161.0 | 10 |
| Growth Rate, cm2/yr (203 plots) | 2.3 | 18.9 | 48.0 | 34.8 | 58.0 | 491.6 | 4 |
| Annual Temperature, °C | 2.5 | 7.1 | 9.4 | 9.6 | 11.7 | 14.8 | 66 |
| January Temperature, °C | -17.8 | -8.1 | -5.7 | -5.2 | -2.6 | 1.8 | 70 |
| Precipitation, mm | 419 | 773 | 885 | 885 | 996 | 1300 | 72 |
| Potential Evapotranspiration, mm/month | 17.9 | 49.7 | 61.3 | 59.7 | 70.4 | 130.0 | 65 |
| Maximum Elevation, m | 103 | 289 | 391 | 359 | 455 | 1210 | 19 |
| Slope, percent | 0.0 | 3.7 | 7.7 | 5.8 | 9.2 | 49.8 | 64 |
| pH | 2.8 | 4.9 | 5.7 | 5.8 | 6.5 | 7.9 | 3 |
| Permeability, cm/hr | 0.2 | 1.0 | 2.3 | 1.5 | 2.7 | 12.5 | 52 |
| Organic Matter, percent | 1.2 | 2.2 | 4.5 | 3.1 | 5.5 | 26.5 | 13 |
| Clay, percent | 4.1 | 18.7 | 23.2 | 24.1 | 28.5 | 47.3 | 31 |
| Water-Holding Capacity, cm/cm | 3.6 | 7.1 | 8.6 | 8.9 | 10.2 | 13.7 | 3 |