Plant resources on the web
UC Davis Arboretum All-Stars
http://arboretum.ucdavis.edu/arboretum_all_stars.aspx
Westervelt Ecological Services
Placer Land Trust
http://www.placerlandtrust.org/
APLD American Professional Landscape Designers
ANLA American Standards for Nursery Stock
California Native Plant Link Exchange
Carolyn Singer on Deer Resistant Plants in the Foothills
NLA Nevada Landscape Association
Placer County Agriculture Department
www.placer.ca.gov/Departments/Agriculture.aspx
California Department of Food and Agriculture
CLCA - California Landscape Contractors Association
ISA - International Society of Aboritculture
UC Davis Extension
www.universityextension.ucdavis.edu
UC Davis Integrated Pest Management
Placer-Nevada Counties Cooperative Extension (local county tree programs, etc.)