[an error occurred while processing this directive]
Updated California Noxious Weed Ratings
Permanent pest ratings have been officially assigned to the following plants by the
Division of Plant Health and Pest Prevention Services, California Department of Food
and Agriculture. These ratings became effective on July 31, 2006.
- Slender false brome - Brachypodium sylvaticum -A rated
- Non-native Dodder - Cuscuta spp. - A rated
- Arundo - Arundo donax - B rated
- Jubata grass - Cortaderia jubata - B rated
- Tamarisk chinensis, T. gallica, T. parviflora, T. rammosissima - B rated
- Tree of heaven -Ailanthus altissima - C rated
- Bull thistle - Cirsium vulgare - C rated
- Spartium junceum - not rated at this point - pending further information review
For general information about noxious weed ratings and their technical definitions see:
http://www.cdfa.ca.gov/phpps/ipc/encycloweedia/winfo_weedratings.htm
CDFA websites will be updated with all current ratings by September 30, 2006
(many are currently out-of-date)
Many species have received Q ratings over the past 2 years.
These will be included in subsequently revised lists.
Steve Schoenig -- Senior Environmental Research Scientist
Program Manager - Terrestrial Weed Eradication Program
Integrated Pest Control Branch -- California Dept. of Food & Ag
1220 N St, Room 341, Sacramento CA 95814 (916)-651-0573
http://www.cdfa.ca.gov/weedhome/
[an error occurred while processing this directive]