Here are some useful Gardening Websites

Pests, Disease, and Weeds
            www.ipm.ucdavis.edu

UC Vegetable and Research Information
           http://vric.ucdavis.edu

Fruit and Nut Research and Information Center
           http://fruitsandnuts.ucdavis.edu  
            ( select tab Backyard Orchard Information)

Weed Research & Information Center
           http://wric.ucdavis.edu

Ornamental Horticulture Research and Information Center
          http://groups.ucanr.org/ohric