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coast live oak
Quercus agrifolia
42,735 observations
valley oak
Quercus lobata
15,195 observations
California black oak
Quercus kelloggii
14,483 observations
canyon live oak
Quercus chrysolepis
13,083 observations
Tanoak
Notholithocarpus densiflorus
11,563 observations
interior live oak
Quercus wislizeni
6,687 observations
blue oak
Quercus douglasii
6,574 observations
beaked hazelnut
Corylus cornuta
4,923 observations
leather oak
Quercus durata
4,803 observations
Southern California Walnut
Juglans californica
4,791 observations
California scrub oak
Quercus berberidifolia
4,791 observations
bush chinquapin
Chrysolepis sempervirens
3,736 observations
Muller's oak
Quercus cornelius-mulleri
3,436 observations
white alder
Alnus rhombifolia
3,412 observations
Engelmann oak
Quercus engelmannii
3,230 observations
Golden chinquapin
Chrysolepis chrysophylla
2,952 observations
Pacific Wax myrtle
Morella californica
2,476 observations
Oregon oak
Quercus garryana
2,343 observations
huckleberry oak
Quercus vacciniifolia
2,108 observations
Nuttall's scrub oak
Quercus dumosa
1,535 observations
northern California black walnut
Juglans hindsii
1,268 observations
Red Alder
Alnus rubra
895 observations
coast oak
Quercus parvula
889 observations
Tucker's Oak
Quercus john-tuckeri
805 observations
Oracle Oak
Quercus × morehus
742 observations
Holm oak
Quercus ilex
630 observations
Jolon Oak
Quercus × jolonensis
521 observations
island scrub oak
Quercus pacifica
499 observations
Torrey's Hybrid Oak
Quercus × acutidens
443 observations
water birch
Betula occidentalis
391 observations
island oak
Quercus tomentella
371 observations
Persian walnut
Juglans regia
346 observations
Palmer's oak
Quercus palmeri
331 observations
grey alder
Alnus incana
323 observations
deer oak
Quercus sadleriana
312 observations
Quercus berberidifolia × engelmannii
Quercus berberidifolia × engelmannii
279 observations
Ewan's Oak
Quercus × ewanii
233 observations
Alvord Oak
Quercus × alvordiana
223 observations
Quercus berberidifolia × durata
Quercus berberidifolia × durata
191 observations
pecan
Carya illinoinensis
184 observations
Gander oak
Quercus × ganderi
182 observations
Epling's Oak
Quercus × eplingii
145 observations
Coast Live × Interior Live Oak
Quercus agrifolia × wislizeni
131 observations
Scrub × Valley Oak
Quercus berberidifolia × lobata
115 observations
Invasive
cork oak
Quercus suber
103 observations
Quercus berberidifolia × john-tuckeri
Quercus berberidifolia × john-tuckeri
100 observations
Quercus berberidifolia × douglasii
Quercus berberidifolia × douglasii
90 observations
Quercus berberidifolia x cornelius-mulleri
Quercus berberidifolia x cornelius-mulleri
86 observations
Cedros Island oak
Quercus cedrosensis
81 observations
Oregon × valley oak
Quercus garryana × lobata
78 observations
Frequently Asked Questions
- The 10 most common deciduous trees in California are:
- coast live oak (Quercus agrifolia)
- valley oak (Quercus lobata)
- California black oak (Quercus kelloggii)
- canyon live oak (Quercus chrysolepis)
- Tanoak (Notholithocarpus densiflorus)
- interior live oak (Quercus wislizeni)
- blue oak (Quercus douglasii)
- beaked hazelnut (Corylus cornuta)
- leather oak (Quercus durata)
- Southern California Walnut (Juglans californica)
- The most observed deciduous tree in California is coast live oak (Quercus agrifolia), with 42,735 recorded observations.
- Some of the most commonly observed invasive deciduous trees in California include:
- cork oak (Quercus suber)