University of California
Western Tree Failure Database/California Tree Failure Report Program
Quercus lobata
Photo: B. Kempfvalley oak root failure
Photo: M. Burgonvalley oak root failure
Photo: J. Brittonvalley oak root failure
Photo: L. Albervalley oak root failure
Photo: D. Ramsayvalley oak trunk failure
Photo: B. Kempfvalley oak trunk failure
Photo: B. Coatevalley oak trunk failure
Photo:D. Brittonvalley oak trunk failure
Photo: C. Rippeyvalley oak branch failure
Photo: J. McClenahanvalley oak branch failure
Photo: B. Kempfvalley oak branch failure
Photo: J. Hermanvalley oak branch failure
Photo: C. Bozavalley oak branch failure