Quercus douglasii

Quercus douglasii

blue oak



  • Deciduous oak of inland woodland areas
  • 30 to 60 feet tall (some very large ones with trunks 4-6 feet in diameter grow in the Mt Diablo vicinity)
  • Extensive root system can reach a depth of 80 feet which helps tree survive the hot dry inland summers
  • Dozens of species of songbirds eat acorns
  • Found in Bay Hills, Diablo, Hamilton, Altamont and Sycamore Grove sections

This website uses cookies to ensure you get the best experience on our website.