Tree survival findings from previously published studies of PHS street trees.
| Study objective | Survival outcome | Years since planting | Sample size | Notes on methods | Citation |
|---|---|---|---|---|---|
| Determine annual survival rate | 95.5% annual survival | 2–10 | 151 | Limited to Acer campestre; mortality rate includes both missing and standing dead | Roman & Scatena (2011) |
| Evaluate survival and growth of bare root versus balled-and-burlapped planting stock | 95% cumulative survival for bare root, 96% for balled-and-burlapped | 2.6 average | 1,411 | Limited to commonly planted species, randomly blocked by year; missing trees were not included in mortality rate | Jack-Scott (2012) |
| Evaluate survival and growth to estimate future benefits | 59% cumulative survival; 87% annual survival | 3–5 | 1,742 | All species included; sampling based on neighborhood groups; mortality rate includes both missing and standing dead | Widney et al. (2016) |