Bay Area Tree Mortality

Dead blackwood Acacia
Dead blackwood Acacia, (Acacia melanoxylon) in the Leona Heights area, Oakland, Alameda Co., October 2020. Credit: US FS PSW

This site is dedicated to providing updates on the increased tree mortality seen across the Bay Area in recent months. Please continue to check back for new resources.


East Bay Regional Park District map of the extent of dieback areas in the East Bay (April 2021) Download: Mapped Dieback Areas [PDF]

Scientific Information


Fire Prevention

See CalFire’s Ready for Wildfire website for helpful information

Tree Care

Watering Mature Landscape Trees (YouTube video)

Contact us

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Aerial view of dead and dying eucalyptus on East Bay Regional Park District lands. December 2020. Credit: EBRPD
Dead blackwood Acacias along Mountain Blvd in Oakland. November 2020. Credit: US FS PSW
Diseased manzanita (Arctostaphylos), gray pine (Pinus sabiniana) and knobcone pine (Pinus attenuata) at Mt Diablo, Contra Costa County in March 2021. Credit: Chris Lee, CALFIRE