Western Tree Failure Database/California Tree Failure Report Program

Quercus lobata

valley oak root failure

Photo: B. Kempf

valley oak root failure

Photo: M. Burgon

valley oak root failure

Photo: J. Britton

valley oak root failure

Photo: L. Alber

valley oak trunk failure

Photo: D. Ramsay

valley oak trunk failure

Photo: B. Kempf

valley oak trunk failure

Photo: B. Coate

valley oak trunk failure

Photo:D. Britton

valley oak branch failure

Photo: C. Rippey

valley oak branch failure

Photo: J. McClenahan

valley oak branch failure

Photo: B. Kempf

valley oak branch failure

Photo: J. Herman

valley oak branch failure

Photo: C. Boza