Photo: Diane Edwardson, June 6, 2014. The Mexican or Blue Elderberry Trees (foreground) throughout the neighborhood have been in decline for several years. However, the Coast Live Oak (big tree in background) is thriving on the meager 7.55" this year (rain year is July 1 - June 30).
According to CalFlora, the Blue Elderberry plant itself is majorly toxic, but the ripe fruit is not.
Disclaimer: The Corralitas Red Car Property Blog prefers to quote reliable sources, such as CalFlora and California Poison Control
on the issue of toxicity. We often get email suggesting some plants
are edible. If you are eating your way through the Red Car Property, we
DO NOT recommend you eat any plant you find in the Red Car Property neighborhood without first doing your own research.