1) Quercus x bushii ‘Seattle Trident’
(Seattle Trident Hybrid Red Oak)
- Cultivar of a Black Oak and Blackjack Oak hybrid.
- Developed in Sir Hillier Gardens and Arboretum in England from scion wood collected at Washington Park Arboretum.
- Located in the Oak Collection, northwest of Azalea Way service road intersection.
2) Quercus dentata (Daimyo Oak)
- Asian native (China, Korea, Japan, Mongolia)
- Develops an unusually large leaf; occasionally used as a vegetable in native range.
- Located in the Oak Collection on hillside near Foster Island Road.
3) Quercus macrocarpa (Bur Oak)
- Native to Eastern and Midwestern U.S.
- Develops a distinct broad canopy as tree matures.
- Located in the Oak Collection along ridge west of Azalea Way.
4) Quercus muhlenbergii (Chinquapin Oak)
- Broad, native range spanning from New England to northeast Mexico.
- Large, slow growing tree with chestnut-like foliage.
- Located in the Oak Collection along ridge west of Azalea Way, north of the Bur Oak.
5) Quercus pontica (Armenian Oak)
- Native to the Caucasus Mountain region of Eastern Europe.
- Shrubby oak: leaves on new wood remain evergreen, yet older wood becomes deciduous.
- Located in the Oak Collection near entrance to the Graham Visitor’s Center.