Each of the following tree species meet one of the following criteria:
1. They usually occur as shrubs in our native forest but very rarely will achieve tree size.
2. They are non-native but not invasive, and are sometimes reported to the Delaware Forest Service.
3. They are unusual species with only one or two known in the State.
| Common Name, Latin Name | Location | Points | C.B.H. | Height | Crown |
| Atlas cedar, Cedrus atlantica | Rockwood Museum and Park, Wilmington | 234 | 148 | 64 | 89 |
| Austrian pine, Pinus nigra | Hagley Museum, Wilmington | 99 | 41 | 54 | 17 |
| Balsam fir, Abies balsamea | Ross Mansion, Seaford | 200 | 109 | 80 | 46 |
| Cedar of Lebanon, Cedrus libani | Brandywine Cemetery, Wilmington | 226 | 150 | 57 | 77 |
| Colorado blue spruce, Picea pungens | Wilmington Country Club, Wilmington | 149 | 81 | 63 | 21 |
| Douglas-fir, Pseudotsuga menziesii | Belmont Hall, Smyrna | 230 | 136 | 81 | 53 |
| English yew, Taxus baccata | Christ Episcopal Church, Dover | 235 | 164 | 54 | 67 |
| European larch, Larix decidua | Brandywine Park, Wilmington | 195 | 106 | 76 | 52 |
| Fraser fir, Abies fraseri | 4353 Summit Bridge Rd., Middletown | 193 | 131 | 60 | 39 |
| Giant sequoia, Sequoiadendron giganteum | Hagley Museum, Wilmington | 236 | 129 | 93 | 57 |
| Himalayan pine, Pinus wallichina | Winterthur, Wilmington | 304 | 186 | 102 | 63 |
| Incense-cedar, Calocedrus decurrens | Marl Pit Rd., Middletown | 245 | 163 | 73 | 37 |
| Japanese umbrella pine, Sciadopitys verticillata | 3307 Heritage Drive, Wilmington | 49 | 20 | 26 | 12 |
| Nikko fir, Abies homolepis | Winterthur, Wilmington | 213 | 131 | 68 | 58 |
| Nordmann fir, Abies nordmanniana | 661 S Dupont Hwy, New Castle | 273 | 180 | 82 | 44 |
| Northern white-cedar, Thuja occidentalis | Baynard Farm, Clayton | 173 | 100 | 65 | 33 |
| Norway spruce, Picea abies | Winterthur, Wilmington | 229 | 114 | 105 | 42 |
| Littleleaf linden, Tilia cordata | Ross Mansion, Seaford | 305 | 197 | 93 | 60 |
| Red pine, Pinus resinosa | Bellevue State Park, Wilmington | 151 | 74 | 72 | 21 |
| Tamarack, Larix laricina | 661 S Dupont Hwy, New Castle | 194 | 115 | 66 | 52 |
| Red mulberry, Morus rubra | 2158 Lighthouse Rd., Smyrna | 331 | 263 | 48 | 80 |
| White fringetree, Chionanthus virginicus | 661 S Dupont Hwy, New Castle | 81 | 34 | 35 | 50 |
| Witch-hazel, Hamamelis virginiana | Hagley Museum, Wilmington | 64 | 24 | 33 | 27 |
| Bladdernut, Staphylea trifolia | 1 Walker’s Mill Rd, Wilmington | 129 | 72 | 43 | 58 |