Skip to main content
UC ANR is committed to providing an accessible and inclusive web experience for all users. If you encounter an accessibility barrier on this or need content in an alternative or remediated accessible format, please contact anraccessibility@ucanr.edu.
Home

Secondary Menu

  • Careers
  • People
  • Blogs
  • Events
  • For ANR Employees

User account menu

Log in Donate
Home

Main navigation

  • About
  • Locations & Centers
    • Counties
    • Research and Extension Centers (RECs)
  • Topics
    • Topics
      • Agriculture
      • Fire
      • Forests
      • Nutrition & Health
      • Pest Management & Plant Health
      • Rangelands
      • Water
      • Youth Development
      • Yard & Garden
  • Programs & Institutes
    • Agriculture
      • UC ANR Innovate
      • UC ANR Policy Institute
      • UC ANR Small Farms Network
      • UC Integrated Pest Management Program
      • UC Organic Agriculture Institute
      • Research and Information Centers (RICs)
      • Sustainable Agriculture Research and Education Program
    • Environment
      • UC ANR Fire Network
      • UC Environmental Stewards
      • California Institute for Water Resources
      • Informatics and Geographic Information Systems
    • Health & Nutrition
      • CalFresh Healthy Living, UC
      • Community Nutrition and Health
      • Expanded Food and Nutrition Education Program
      • Nutrition Policy Institute
      • UC Master Food Preserver Program
    • Youth & Community
      • 4-H Youth Development Program
      • UC Master Gardener Program
  • News
  • About
  • Locations & Centers
    • Counties
    • Research and Extension Centers (RECs)
  • Topics
    • Topics
      • Agriculture
      • Fire
      • Forests
      • Nutrition & Health
      • Pest Management & Plant Health
      • Rangelands
      • Water
      • Youth Development
      • Yard & Garden
  • Programs & Institutes
    • Agriculture
      • UC ANR Innovate
      • UC ANR Policy Institute
      • UC ANR Small Farms Network
      • UC Integrated Pest Management Program
      • UC Organic Agriculture Institute
      • Research and Information Centers (RICs)
      • Sustainable Agriculture Research and Education Program
    • Environment
      • UC ANR Fire Network
      • UC Environmental Stewards
      • California Institute for Water Resources
      • Informatics and Geographic Information Systems
    • Health & Nutrition
      • CalFresh Healthy Living, UC
      • Community Nutrition and Health
      • Expanded Food and Nutrition Education Program
      • Nutrition Policy Institute
      • UC Master Food Preserver Program
    • Youth & Community
      • 4-H Youth Development Program
      • UC Master Gardener Program
  • News
  1. UC ANR
  2. Western Tree Failure Database/California Tree Failure Report Program
  3. Quercus kelloggii
Western Tree Failure Database/California Tree Failure Report Program

Quercus kelloggii

Print

California black oak branch failure
California black oak branch failure
Photo: K. Jones

black oak trunk failure at ground level
black oak trunk failure at ground level
Photo: J. Benassini

black oak trunk failure
black oak trunk failure
Photo: J. Benassini

black oak high codominant trunk failure
black oak high codominant trunk failure
Photo: J. Allen
  • Home
  • News
  • How to enter data
  • Contact Information
  • WTFD Statistics
  • Failure Photos
    • Quercus agrifolia
    • Pinus radiata
    • Cupressus macrocarpa
    • Eucalyptus globulus
    • Quercus lobata
    • Pinus pinea
    • Quercus kelloggii
    • Sequoia sempervirens
    • Fraxinus velutina 'Modesto'
    • Liquidambar styraciflua
    • Eucalyptus sideroxylon
    • Acacia melanoxylon
    • Quercus wislizeni
    • Pseudotsuga menziesii
    • Cedrus deodara
    • Pinus halepensis
    • Pyrus calleryana
    • Umbellularia californica
    • Ulmus parvifolia
    • Calocedrus decurrens
    • Pinus attenuata
  • Species Profiles and Summaries
  • Stories
  • Annual Meetings
  • Post a Question
  • Failure Report Forms and Manuals
  • Tree Links
Archived Content

Share This Page

  • Facebook
  • X (Twitter)
  • Whatsapp
  • Messenger
  • LinkedIn

Home

Legal Menu

  • Copyright
  • Nondiscrimination Statements
  • Accessibility
  • Contact
  • Privacy

© 2026 Regents of the University of California