Pests and Diseases

European Grapevine Moth

Updated info coming soon…


Updated info coming soon…

Glassywinged Sharp Shooter

California Department of Foods and Agriculture GWSS Home Page. Daily GWSS updates included on this site. Recent detections and actions taken included on daily updates.

University of California Agriculture & Natural Resources Homepage. Glassy-Winged Sharpshooter Media Kit contains up to date news releases and UC Pierce’s Disease Research and Emergency Response Task Force information.

List of Integrated Pest Management information available from U.C. Ventura. GWSS information and detailed photos available.

From UC Davis:

Vine Mealy Bug

Sonoma County Winegrape Commission received funding from EPA for a Vine Mealybug research project. To read the Final Grant Report, please see link:

Red Blotch Disease

Pull Red Blotch Vines, Get Paid

Federal disaster program pays growers to remove infected grapevines.

California grapegrowers whose vineyards are affected by the Grapevine Red Blotch-associated Virus, in Sonoma County, may be eligible for financial aid to replace infected vines under a relatively new program attached to the 2014 Farm Bill. The aim is to ameliorate the effects and limit the spread of the still-mysterious red blotch virus in many of the state’s major grape-producing counties. The aid comes under the Farm Bill’s Tree Assistance Program (TAP), which provides financial assistance to growers whose vines are damaged by “natural disasters.”

Before starting the process to receive TAP disaster relief, Marianne Morton, executive director of the Napa/Solano County USDA Farm Service Agency (FSA), advised that growers must verify red blotch is present where suspected.

Specimens must be submitted to an approved commercial lab for analysis.

Further, she summarized:

  • Vines cannot be removed before inspection by a Farm Service Agency (FSA) employee. Your county FSA will send a loss adjuster to visually inspect the vines.
  • Producers may receive assistance for a maximum of 500 acres annually.
  • The first 15% of loss is not covered.
  • Maximum payment rates: $4 per vine replacement; $2 per vine planting; $500 per acre for site preparation.

Locate the closest FSA Service Center Office near you.