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coast live oak
Quercus agrifolia
40,187 observations
valley oak
Quercus lobata
13,747 observations
California black oak
Quercus kelloggii
13,165 observations
canyon live oak
Quercus chrysolepis
11,261 observations
Tanoak
Notholithocarpus densiflorus
10,480 observations
interior live oak
Quercus wislizeni
6,217 observations
blue oak
Quercus douglasii
5,970 observations
beaked hazelnut
Corylus cornuta
4,680 observations
leather oak
Quercus durata
4,471 observations
Southern California Walnut
Juglans californica
4,379 observations
California scrub oak
Quercus berberidifolia
4,364 observations
bush chinquapin
Chrysolepis sempervirens
3,503 observations
Muller's oak
Quercus cornelius-mulleri
3,225 observations
white alder
Alnus rhombifolia
3,223 observations
Engelmann oak
Quercus engelmannii
3,038 observations
Golden chinquapin
Chrysolepis chrysophylla
2,791 observations
Pacific Wax myrtle
Morella californica
2,383 observations
Oregon oak
Quercus garryana
1,999 observations
huckleberry oak
Quercus vacciniifolia
1,857 observations
Nuttall's scrub oak
Quercus dumosa
1,452 observations
northern California black walnut
Juglans hindsii
1,135 observations
Red Alder
Alnus rubra
842 observations
coast oak
Quercus parvula
836 observations
Tucker's Oak
Quercus john-tuckeri
743 observations
Oracle Oak
Quercus × morehus
662 observations
Holm oak
Quercus ilex
568 observations
Jolon Oak
Quercus × jolonensis
454 observations
Torrey's Hybrid Oak
Quercus × acutidens
436 observations
island scrub oak
Quercus pacifica
385 observations
island oak
Quercus tomentella
350 observations
water birch
Betula occidentalis
340 observations
Persian walnut
Juglans regia
337 observations
Palmer's oak
Quercus palmeri
297 observations
grey alder
Alnus incana
293 observations
Quercus berberidifolia × engelmannii
Quercus berberidifolia × engelmannii
266 observations
deer oak
Quercus sadleriana
250 observations
Ewan's Oak
Quercus × ewanii
229 observations
Alvord Oak
Quercus × alvordiana
213 observations
Quercus berberidifolia × durata
Quercus berberidifolia × durata
178 observations
pecan
Carya illinoinensis
171 observations
Gander oak
Quercus × ganderi
162 observations
Epling's Oak
Quercus × eplingii
126 observations
Coast Live × Interior Live Oak
Quercus agrifolia × wislizeni
125 observations
Quercus berberidifolia × john-tuckeri
Quercus berberidifolia × john-tuckeri
101 observations
Scrub × Valley Oak
Quercus berberidifolia × lobata
99 observations
Invasive
cork oak
Quercus suber
96 observations
Quercus berberidifolia x cornelius-mulleri
Quercus berberidifolia x cornelius-mulleri
84 observations
Quercus berberidifolia × douglasii
Quercus berberidifolia × douglasii
78 observations
Quercus berberidifolia × dumosa
Quercus berberidifolia × dumosa
75 observations
Cedros Island oak
Quercus cedrosensis
73 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 40,187 recorded observations.
- Some of the most commonly observed invasive deciduous trees in California include:
- cork oak (Quercus suber)