Marin Master Gardeners
University of California
Marin Master Gardeners

Plant Guide

Quercus suber

Common Name
Cork Oak
CA Native
Non-native
Plant Type
Tree
Size
25’ - 40’
Flower Color
Yellow
Bloom Time
  • Spring
Leaves
Green
Evergreen
Evergreen
Deer Resistant
Rarely Damaged
Wildlife Value
  • Bird Habitat
Growth Rate
Slow
Hardiness
Hardy
Adverse Growth Factors
None
Special Features
  • Erosion Control
  • Low Maintenance
  • Specimen
Water Use
  • Drought Tolerant
Soil pH
6.5-7.5 (neutral)
Exposure
  • Full Sun
Soil Type
Not Particular
Drainage
Good Drainage
Description and Cultural Plant Tips

Unlike the California native oaks, the Cork Oak is not susceptible to SOD, and has a fire resistant bark.  The tree is native to Southwest Europe and Northwest Africa. At one time all of the bark was harvested for making corks - after the tree was at least 20 years old. Cork Oaks can live up to 200 years.

Master Gardener Comments

Takes no summer water. Has a spectacular bloom in the spring. Very hardy.  The Cork Oak is a very important tree for biodiversity in forest habitats and winter habitat for large birds.

Varietals

Top of page

Webmaster Email: banielsen@ucanr.edu