UCCE Master Gardeners of San Joaquin County
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UCCE Master Gardeners of San Joaquin County

Posts Tagged: oak

Invasive pest spotlight: Goldspotted Oak Borer

Photo Bark staining on coast live oak caused by larvae of the goldspotted oak borer. [Photo by Tom Coleman, USDA Forest Service]

Goldspotted oak borer. First identified in eastern San Diego County in 2004, the goldspotted oak borer, Agrilus auroguttatus, has killed over 25,000 California native red oaks since its arrival and has now been detected in Riverside County. Larvae feed...

Photo Adult female (left) and male (right) goldspotted oak borers. [Photo by Michael Jones, UC Davis]
Photo Adult female (left) and male (right) goldspotted oak borers. [Photo by Michael Jones, UC Davis]

Photo Adult female (left) and male (right) goldspotted oak borers. [Photo by Michael Jones, UC Davis]

Posted on Tuesday, February 23, 2016 at 10:47 AM
Tags: beetle (10), Flint (3), goldspotted oak borer (1), GSOB (1), invasive (46), oak (2), pest (75), UC IPM (225)

Foamy Bark Canker: A New Disease on Coast Live Oak

Figure 4 Foamy liquid oozing from an infected tree. [A. Eskalen, UCR]

[From the August 2015 issue of the UC IPM Green Bulletin]  Declining coast live oak (Quercus agrifolia) trees have recently been found throughout urban landscapes in Los Angeles, Orange, Riverside, Santa Barbara, Ventura and Monterey counties. A...

Posted on Friday, September 25, 2015 at 3:05 PM
Tags: Akif Eskalen (1), bark (3), beetle (10), beetles (13), canker (3), foamy (2), Geosmithia pallida (1), oak (2), oaks (1), ooze (1), Pseudopityophthorus pubipennis (1), UCCE (10)
 
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