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San Francisco Bay Area
![Sudden oak death, Bruce Moltzan, USDA For](https://static.wixstatic.com/media/80da86_2d44786015e94488850cb03ee3521573~mv2.jpg/v1/fill/w_26,h_35,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/Sudden%20Oak%20Death%20Bruce%20Moltzan%2C%20USDA%20For.jpg)
![Flatheaded fir borer, Steven Valley, Oregon Department of Agri](https://static.wixstatic.com/media/80da86_fe45e8149dbe4d7e9a12e88481a4d7ed~mv2.jpg/v1/fill/w_70,h_34,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/Steven%20Valley%2C%20Oregon%20Department%20of%20Agri.jpg)
![Canker rot, Robert Anderson, Bugwood.org](https://static.wixstatic.com/media/80da86_49b876dde7404b7c8f82fa614d46e160~mv2.jpg/v1/fill/w_23,h_35,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/5494832-WEB.jpg)
![San Francisco region](https://static.wixstatic.com/media/80da86_8aef609c90c5450b9a507b8640bbc789~mv2.png/v1/crop/x_859,y_1161,w_1143,h_1029/fill/w_269,h_242,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/San%20Francisco.png)
This region, which circles the bay, features significant topographic relief, with Douglas-fir/tanoak stands and redwood forests as well as drier oak/pine stands and chaparral.
Typical insect and disease problems
• Sudden oak death
• Pitch canker of pines, especially Monterey pine and bishop pine
• Flatheaded fir borer in Douglas-fir
• Canker rots, true mistletoes, bark beetles, and ambrosia beetles in oaks
• Tree, shrub, and herb regeneration problems caused by non-native Phytophthora species
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