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Red Alder
Alnus rubra
4,073 observations
Oregon oak
Quercus garryana
2,824 observations
beaked hazelnut
Corylus cornuta
1,685 observations
green alder
Alnus alnobetula
488 observations
Pacific Wax myrtle
Morella californica
330 observations
silver birch
Betula pendula
269 observations
English oak
Quercus robur
247 observations
common hazel
Corylus avellana
234 observations
paper birch
Betula papyrifera
198 observations
bog myrtle
Myrica gale
169 observations
Persian walnut
Juglans regia
131 observations
Sweet Chestnut
Castanea sativa
122 observations
northern red oak
Quercus rubra
116 observations
Golden chinquapin
Chrysolepis chrysophylla
92 observations
European beech
Fagus sylvatica
80 observations
eastern black walnut
Juglans nigra
66 observations
water birch
Betula occidentalis
39 observations
grey alder
Alnus incana
37 observations
white alder
Alnus rhombifolia
19 observations
river birch
Betula nigra
15 observations
pin oak
Quercus palustris
7 observations
scarlet oak
Quercus coccinea
6 observations
swamp birch
Betula pumila
6 observations
American chestnut
Castanea dentata
5 observations
Invasive
Hungarian Oak
Quercus frainetto
4 observations
Invasive
European Hop-hornbeam
Ostrya carpinifolia
3 observations
Turkish Hazel
Corylus colurna
3 observations
European Hornbeam
Carpinus betulus
2 observations
Japanese walnut
Juglans ailantifolia
2 observations
coast live oak
Quercus agrifolia
1 observations
Chinese chestnut
Castanea mollissima
1 observations
cork oak
Quercus suber
1 observations
American hazelnut
Corylus americana
1 observations
Butternut
Juglans cinerea
1 observations
dwarf resin birch
Betula glandulosa
1 observations
Sawtooth oak
Quercus acutissima
1 observations
common alder
Alnus glutinosa
1 observations
Frequently Asked Questions
- The 10 most common deciduous trees in Washington are:
- Red Alder (Alnus rubra)
- Oregon oak (Quercus garryana)
- beaked hazelnut (Corylus cornuta)
- green alder (Alnus alnobetula)
- Pacific Wax myrtle (Morella californica)
- silver birch (Betula pendula)
- English oak (Quercus robur)
- common hazel (Corylus avellana)
- paper birch (Betula papyrifera)
- bog myrtle (Myrica gale)
- The most observed deciduous tree in Washington is Red Alder (Alnus rubra), with 4,073 recorded observations.
- Some of the most commonly observed invasive deciduous trees in Washington include:
- Hungarian Oak (Quercus frainetto)
- European Hop-hornbeam (Ostrya carpinifolia)