Doug Walsh, holding a mealybug pheromone trap, says that such traps have been used throughout the state to look for vine mealybug. Thus far, the destructive pest that’s prevalent throughout California grape regions, has not been found in Washington. Melissa Hansen While exotic and invasive pests threaten grape industries in other West Coast states, Washington’s grape industry has thus far been relatively unscathed. Vine mealybug has not yet been detected in Washington vineyards, and spotted wing drosophila larvae do not appear to be able to develop on Washington’s juice or wine grapes, says Washington State University’s Dr. Doug Walsh. However, […]