Where do I go to have a plant or weed identified?

You can bring in a specimen to the UC Cooperative Extension's Master Gardeners for identification. The Agricultural Commissioner's staff can also help identify landscape plants or unwanted weeds. Napa County Master Gardeners are available:

  • Monday, Wednesday and Friday
    9 a.m. - Noon
  • 1710 Soscol Avenue
    Suite 4
    Napa, CA 94559
  • Phone: 707-253-4221

Show All Answers

1. How much are the Napa County Agricultural Commissioner's Office fees?
2. Do I need a certificate, permit or license before I can purchase a pesticide for use on my own property?
3. Do I need to submit a Pesticide Use Report? When are Use Reports due in your office?
4. How often must training occur?
5. If I have concerns about nearby pesticide use, what can I do?
6. How do insect traps benefit our county?
7. What if I do not want to have a trap on my property?
8. Why is the Glassy-winged Sharpshooter a threat to Napa County?
9. Why is Napa County so concerned about the Glassy-winged Sharpshooter when it is only a threat to vineyards?
10. What is Napa County doing to stop the spread of the Glassy-Winged Sharpshooter?
11. What can I do to prevent Glassy-winged Sharpshooter from entering Napa County?
12. Where can I find information about ant control and ant bait stations?
13. Where can I send my plant or soil sample to be tested for disease and/or deficiencies?
14. Where do I go to have a plant or weed identified?
15. Where do I go to have an insect identified?