University of California Cooperative Extension

University of California (UC) Cooperative Extension is part of the national Land Grant system, where selected public institutions of higher learning are charged with providing practical education to the general public through various outreach efforts. Our collaboration with Napa County and the Agricultural Commissioner's Office is one of those outreach efforts.


Our mission is to serve Napa County residents through the creation, development and extension of knowledge in agriculture, natural resources, youth development, and family and consumer sciences.

Providing Information

UC Cooperative Extension brings this research-based information directly to the people of Napa County via several opportunities and methods:

  • Electronic delivery
  • One-on-one contacts
  • Publications
  • Seminars
  • Training opportunities
  • Volunteer programs
  • Workshops

Staff also works with individuals and organizations including agricultural producers, range land owners, families and youth, consumers, government and non-governmental agencies, and the general public.



The Viticulture Program conducts education and problem-solving research programs for local grape growers, winemakers and others.

Weed Science

The Weed Science Program works with grape and orchard growers to research and extend effective, efficient and sustainable weed control methods. The program integrates local, state-wide and campus-based research to bring innovative weed control approaches to Napa County.

Food and Nutrition

The Food and Nutrition Program provides consumers with information in food safety and food preservation.

4-HYoung boys practicing archery

The 4-H Youth Development Program focuses on building healthy families and engaging youth to reach their fullest potential. The program offers citizenship, leadership and life skills development utilizing learn-by-doing activities.

Master Gardener

The Master Gardener Program trains volunteers and oversees their efforts to extend research-based horticultural information to the home gardening public.