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Invasive Spotlight: Sudden Oak Death
Sudden oak death is a disease of oak trees that is caused by an invasive plant pathogen Phytophthora ramorum. The disease has been found infecting trees in coastal California counties from Monterey to Humboldt and can be spread by...
Phytophthora tentaculata: A New Exotic and Invasive Disease
![Fig. 1 (a) Dying and dead Diplacus aurantiacus (orange bush monkeyflower) with advanced above ground symptoms, typical of Phytophthora disease. The infected plant has chlorotic (yellowing and browning) foliage. [L. Sims]](http://ucanr.edu/blogs/UCIPMurbanpests//blogfiles/40702small.jpg "Fig. 1 (a) Dying and dead Diplacus aurantiacus (orange bush monkeyflower) with advanced above ground symptoms, typical of Phytophthora disease. The infected plant has chlorotic (yellowing and browning) foliage. [L. Sims]")
[From the December 2016 issue of the UC IPM Green Bulletin] A new plant pathogen in the genus Phytophthora (pronounced Fie-TOF-ther-uh) has recently been found in several California native plant nurseries and habitat restoration sites. The pathogen,...
Citizens Concerned about Sudden Oak Death in San Luis Obispo County
From the ANR News Blog Central Coast residents, officials, ranchers and representatives of conservation organizations came out in force to a November UC Cooperative Extension meeting sounding an alarm about the recent detection of Sudden Oak Death (SOD)...
When Monitoring Is the Best Action - The Case of Two “Flux Diseases”
![Figure 1. [J.K. Clark]](http://ucanr.edu/blogs/UCIPMurbanpests//blogfiles/38768small.jpg "Figure 1. [J.K. Clark]")
[From the August 2016 issue of the UC IPM Green Bulletin] Two “sap flux” diseases observed in landscape trees—bacterial wetwood (or slime flux) and alcoholic (“foamy”) flux—often trigger demands that a landscaper...
Sudden Oak Death Moving to Urban Areas; 3 Steps to Protect Oaks
Drought is decreasing but not defeating the pathogen that causes sudden oak death, according to a citizen science-assisted survey conducted this spring by a UC Agriculture and Natural Resources forest pathologist. Results of the 2015 Sudden Oak Death...
