plant · GBIF taxon 2878373
Valley Oak
Quercus lobataAlso known as Roble, California White Oak, Weeping Oak
Valley oaks dominate California's rich valley floors, growing into majestic giants with massive, weeping branches that can sweep all the way to the ground. These deciduous trees rely on deep taproots to reach permanent groundwater, allowing them to survive the hot, dry Mediterranean summers. Their deeply lobed, matte-green leaves and thick, alligator-like bark provide critical habitat for hundreds of native insect, bird, and mammal species.
DeciduousEndemicAncient
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- diet
- Photosynthesis (Sunlight, Water, Carbon Dioxide)
- family
- Fagaceae
- threats
- Agricultural conversion, urban development, lowering of water tables, and sudden oak death
- life Span
- Up to 600 years
NT
Acorns and leaves contain tannins toxic to dogs and horses; keep pets from chewing them.
- Observe the canopy: Look upward to spot acorn woodpeckers tending to their massive granary trees.
- Check the leaves: Examine the deep, rounded lobes and felt-like undersides to distinguish them from other oaks.
- Protect the roots: Avoid compacting the soil or watering heavily under the canopy of mature trees.