The Mediterranean Oak Borer (MOB) is an invasive ambrosia beetle that infests several species of white oaks in California: valley oak, blue oak, and Oregon oak. The beetle is spreading rapidly in Napa, Lake, Sonoma, and Sacramento Counties and has been detected in neighboring El Dorado, Yolo, and Mendocino…
Integrated Pest Management--Managing pest with environmentally sound methods, and answers to your "bugly" problems. Come and hear about multiple techniques for effective pest control that are the least toxic. Discover methods to keep bad pests away and encourage beneficial insects, all…
Want to learn how to manage pests without pesticides? In this webinar we will review nonchemical pest management practices as alternatives to pesticides in the home and garden. Visit the Urban and Community Webinar website to learn more about this webinar series.
Bermuda buttercup (Oxalis pes-caprae), also called buttercup oxalis or sourgrass, might be a familiar sight in winter and spring, particularly to those who live in coastal regions or the Sacramento Valley. Some people enjoy seeing this plant’s cheerful yellow flowers pop up in their spring gardens, but for…
General situation, thrips population developmentPlanting is in full swing. Temperatures and precipitation this spring are close to historic norms, and the thrips population predictions are very similar to those we saw last year. We’re currently at the peak of 1st-generation adults; they’ll be laying their…
Dear Colleagues,1) California Department of Food and Agriculture’s (CDFA) Integrated Pest Control Branch is now accepting applications for the Vertebrate Pest Control Research Program (VPCRP). This funding opportunity is designed to support innovative research and education projects aimed at…
Armillaria root rot, also known as Oak root fungus, is a disease of many different plants. There is no known effective cure. Root rot fungus disease of trees and woody plants. Affects palms, succulents, ferns and other herbaceous plants like begonia, daffodil, dahlia, and geranium. No…
Seedlings sometimes fail to sprout or die soon after. Seeds may rot before germinating, shoots may decay before they emerge, or stems of seedlings may be attacked near the soil line, causing young plants to collapse. These diseases are collectively called “damping off,” likely caused by a number of soil…
Downy mildews, including Peronospora and Plasmopara spp., are pathogenic water molds (oomycetes) that primarily damage foliage. Hosts include cane berries, roses, various herbaceous ornamentals, and many fruit, grain, and vegetable crops. CategoryFungiSigns/SymptomsDowny mildew causes pale green to…
Fire blight is a common and frequently destructive disease of pome fruit trees and related plants. The disease can destroy limbs and even entire shrubs or trees. Caused by the bacterium Erwinia amylovora. Pear (Pyrus species) and quince (Cydonia) are extremely susceptible. Apple, crabapple …
