| Cornus racemosa | Gray Dogwood | | Dogwood & Common Shrubs | Shrub 4 to 8 feet, Deciduous, Full sun, Part shade, Zone 3b, Can tolerate acid to alkaline soil (pH 5.0 to 8.0) |
| Hydrangea paniculata Le Vasterival 'Great Star' | Great Star Panicle Hydrangea | | Hydrangea paniculata Collection (all of Cornell campus), Hydrangea Paniculata @ Stocking and Wing Halls | Shrub 4 to 8 feet, Full sun, Part shade, Shade, Zone 3b, Can tolerate acid to alkaline soil (pH 5.0 to 8.0) |
| Fraxinus pennsylvanica | Green Ash; Red Ash | | Native and Invasive Plants | Tree > 30 feet, Deciduous, Full sun, Zone 3a, Can tolerate acid to alkaline soil (pH 5.0 to 8.0) |
| Hydrangea paniculata Greenspire 'Green Fantasy' | Green Fantasy Panicle Hydrangea | | Hydrangea paniculata Collection (all of Cornell campus), Hydrangea Paniculata @ Arboretum and Zucker; Hydrangea paniculata Collection (all of Cornell campus), Hydrangea paniculata @ Friedman Wrestling Center | Shrub 4 to 8 feet, Shrub < 4 feet, Full sun, Part shade, Shade, Zone 3b, Can tolerate acid to alkaline soil (pH 5.0 to 8.0) |
| Baccharis halimifolia | Groundseltree, Eastern Baccharis | | Dry Site Plants | Shrub > 8 feet, Shrub 4 to 8 feet, Deciduous, Full sun, Zone 5b, Can tolerate acid to alkaline soil (pH 5.0 to 8.0), Tolerates salt spray, Tolerates salty soil |
| Celtis occidentalis | Hackberry; Sugarberry | | High pH | Tree > 30 feet, Deciduous, Full sun, Zone 3b, Can tolerate acid to alkaline soil (pH 5.0 to 8.0), Tolerates salty soil |
| Hydrangea paniculata 'Hannah Rose' | Hannah Rose Panicle Hydrangea | | Hydrangea paniculata Collection (all of Cornell campus), Hydrangea paniculata @ Friedman Wrestling Center | Shrub 4 to 8 feet, Deciduous, Full sun, Part shade, Zone 5b, Can tolerate acid to alkaline soil (pH 5.0 to 8.0) |
| Eucommia ulmoides | Hardy Rubber Tree | | Dry Site Plants, Campus trees walk | Tree > 30 feet, Deciduous, Full sun, Zone 5b, Can tolerate acid to alkaline soil (pH 5.0 to 8.0), Tolerates salty soil |
| Acer campestre | Hedge Maple | | Maples, Beeches and Others | Tree < 30 feet, Deciduous, Full sun, Zone 5a, Can tolerate acid to alkaline soil (pH 5.0 to 8.0) |
| Hypericum 'Hidcote' | Hidcote St. Johnswort | | | Shrub < 4 feet, Groundcover, Deciduous, Full sun, Zone 6b, Can tolerate acid to alkaline soil (pH 5.0 to 8.0) |
| Prunus subhirtella | Higan Cherry | | Rosaceous & Flowering Trees | Tree < 30 feet, Deciduous, Full sun, Part shade, Zone 5b, Can tolerate acid to neutral soil (pH 5.0 to 7.4) |
| Vaccinium corymbosum | Highbush Blueberry | | None Listed | Shrub 4 to 8 feet, Deciduous, Full sun, Zone 4b, Requires acid (pH 5.0 to 7.0) |
| Pinus wallichiana | Himalayan Pine | | Pines et. al. | Tree > 30 feet, Evergreen, Full sun, Part shade, Zone 5b, Can tolerate acid to alkaline soil (pH 5.0 to 8.0) |
| Chamaecyparis obtusa | Hinoki Falsecypress | | Evergreens with Scales | Tree > 30 feet, Tree < 30 feet, Evergreen, Full sun, Part shade, Zone 5a, Can tolerate acid to alkaline soil (pH 5.0 to 8.0) |
| Ostrya virginiana | Hop Hornbeam | | Native and Invasive Plants | Tree > 30 feet, Tree < 30 feet, Deciduous, Full sun, Part shade, Zone 3b, Can tolerate acid to alkaline soil (pH 5.0 to 8.0) |
| Ulmus 'Accolade' | Hybrid Elm 'Accolade' | | | Tree > 30 feet, Deciduous, Full sun, Zone 4b, Can tolerate acid to alkaline soil (pH 5.0 to 8.0), Tolerates salty soil |
| Ulmus 'Frontier' | Hybrid Elm 'Frontier' | | | Tree > 30 feet, Deciduous, Full sun, Zone 5a, Can tolerate acid to alkaline soil (pH 5.0 to 8.0), Tolerates salty soil |
| Ulmus 'Pioneer' | Hybrid Elm Pioneer Elm | | None Listed | Tree > 30 feet, Deciduous, Full sun, Zone 5a, Can tolerate acid to alkaline soil (pH 5.0 to 8.0), Tolerates salty soil |
| Ulmus spp. | Hybrid Elms and other species | | None Listed | Tree > 30 feet, Deciduous, Full sun, Zone , Can tolerate acid to alkaline soil (pH 5.0 to 8.0), Tolerates salty soil |
| Hydrangea paniculata 'Ian Robertson' | Ian Robertson Panicle Hydrangea | | Hydrangea paniculata Collection (all of Cornell campus), Hydrangea paniculata @ Friedman Wrestling Center | Shrub 4 to 8 feet, Deciduous, Full sun, Part shade, Zone 5a, Can tolerate acid to alkaline soil (pH 5.0 to 8.0) |