Integrated Pest Control
The Integrated Pest Control (IPC) Program, a division within the
County of San Diego, Department of Agriculture, Weights &
Measures, performs several functions within the County of San
Weed control along County roads, County airports and right of ways
Invasive and exotic weed eradication on County and non-County property
Structural pest control at County-owned facilities (We do not provide pest control services on private property)
IPC uses computerized chemical injection herbicide trucks that perform well in all our weed control projects. Weed control along County roads and right-of-ways increases safety by preserving visibility and clearance, reducing fire danger along roadways and intersections, enhancing drainage to prevent flooding, and keeping safety pull-over areas visible and easy to use.
All staff in the Integrated Pest Control Program are State-certified pesticide applicators that are extensively trained in the Integrated Pest Management principals of finding and using the least toxic methods for all pest control needs.
Anyone requesting that herbicides not be used along their right-of-way to a County maintained road must fill out a Right of Way Weed Control Agreement form and assume responsibility for controlling vegetation to specified standards.
Contact Us/Report an Invasive Weed
County of San Diego
Agriculture, Weights & Measures - Integrated Pest Control
Report an Invasive Weed
When reporting a possible/known invasive plant species found within the county, fill out the Specimen for Determination form below and email it along with any pictures to IPC.AWM@SDCounty.CA.gov.
Note: Email file size must be no larger than 10Mb. Please split files up into multiple emails if necessary.
Alternatively, please turn in the form below and the plant sample to the County of San Diego, Agriculture Weights and Measures, located at 9325 Hazard Way, Suite 100, San Diego, CA 92123-1217. Within the form, it is important to include your contact information so we may reach you for further clarification or to update you on any next steps.
Desert knapweed: Volutaria tubuliflora
Volutaria (Volutaria tubuliflora) is a highly invasive, noxious weed and A-rated pest by the California Department of Food and Agriculture (CDFA).
A-rated pest definition: A pest of known economic or environmental detriment and is either not known to be established in California or it is present in a limited distribution that allows for the possibility of eradication or successful containment.
“Noxious weed” means any species of plant that is, or is liable to be, troublesome, aggressive, intrusive, detrimental, or destructive to agriculture, silviculture, or important native species, and difficult to control or eradicate
There are three known populations in North America, two of which are Borrego Springs and Chula Vista. Since 2016, AWM has worked to mitigate the spread of Volutaria by controlling it on roadsides, public property, and some private property; eradication or control efforts on private property require Right of Entry Authorization permits. While the Chula Vista site is small and well-controlled, Volutaria continues to spread in Borrego Springs.
County of San Diego’s Department Agriculture, Weights and Measures (AWM) has partnered with CDFA, California Invasive Plant Council, Department of National Parks, Borrego Springs Revitalization Committee, and several other agencies to aid in the eradication of this invasive weed. Currently AWM’s priority is the development and systematic distribution of outreach to obtain Right of Entry Authorization permits from property owners with known infestations of Volutaria. The plant produces a moderate number of seeds that spread along roads, although large plants may produce thousands of seeds; eradication of this Noxious weed in unattainable unless we can locate and treat weeds prior to seeding and thus eliminating the seed bank.
If you believe that Volutaria tubuliflora is located on your property (see CalFlora map), please assist in the eradication efforts of this invasive weed by filling out the Right of Entry Authorization form and emailing it to IPC.AWM@SDCounty.CA.gov.