UC ANR is committed to providing an accessible and inclusive web experience for all users. If you encounter an accessibility barrier or need content in an alternative or remediated accessible format, please contact anraccessibility@ucanr.edu.
Coast live oak is the most commonly reported species in the CTFRP database. (See CTFRP Statistics/50 or more) It is the most widely planted native California oak in urban landscapes. Many remnant coast live oaks of great age can be found within developed areas.
The database (September, 2011) contains 1878 reports of branch failures for which a date is recorded. Eight genera have 87 or more branch failure reports. The following table lists the percentage of failures that occurred for each genus for the periods May-October and November-April.
Summary data for root failures 12/08/11. This data does not include data from the wind event of 11/30/11-12/02/11 The database contains 5264 reports. 1790 are root failures.
Once every 10 years or so extraordinarily powerful wind events occur in California that are not associated with typical rainy winter weather. Starting on the night of Wednesday November 30, 2011 it happened again throughout the state and beyond.
July 21, 2011 Summary data for Liquidambar styraciflua, American sweet gum, branch failures There are 5161 reports in the database. 137 are Liquidambar styraciflua (Trunk 38, Branch 96 and Root 3) Mean diameter of branch at point of failure: 7 inches Failure at attachment: 68% Failure 6 ft.
