The relative abundance and frequency of problems associated with the 20 most common genera of landscape plants found in 26 homesites in Maryland in 1982. Homesites were monitored by a commercial arborist
| Plant genus | % of total plants | % of total problems | % of plants in genus with problems |
|---|---|---|---|
| Rhododendron | 22.8 | 25.0 | 17.1 |
| Ilex | 12.8 | 3.4 | 2.1 |
| Buxus | 8.8 | 24.0 | 42.7 |
| Juniperus | 5.6 | 0.0 | 2.0 |
| Tsuga | 4.7 | 1.8 | 6.1 |
| Taxus | 3.3 | 0.1 | 0.6 |
| Rosa | 3.1 | 8.4 | 42.4 |
| Pinus | 2.7 | 0.5 | 2.9 |
| Cornus | 2.1 | 14.2 | 100.0 |
| Prunus | 2.0 | 4.8 | 100.0 |
| Euonymus | 1.9 | 1.1 | 25.1 |
| Viburnum | 1.3 | 0.6 | 2.6 |
| Quercus | 1.2 | 0.7 | 9.8 |
| Acer | 1.1 | 0.9 | 12.2 |
| Thuja | 0.9 | 0.0 | 1.0 |
| Berberis | 0.8 | 0.0 | 1.0 |
| Ligustrum | 0.7 | 0.6 | 12.0 |
| Ligustrum | 1.3 | 1.3 | 23.1 |
| Hosta | 0.7 | 1.9 | 39.7 |
| Osmanthus | 0.7 | 0.0 | 0.0 |
| Pieris | 0.5 | 1.3 | 41.0 |
| Total | 77.8 | 89.3 |