Los Angeles County WMA – California Invasive Plant Council

General contact: Jim Hartman, Los Angeles County Agricultural Commissioner/Weights & Measures, at (626) 450-7445

Meetings: Contact WMA for more information

Outreach Summary:

Solstice Canyon is owned ny the National park Service. Euphorbia terracina populations found in Solstice Canyon will be treated with a combination of handpulling and herbicide application between January 2007 and January 2008. Control methods and timing will be based on extensive field experience by NPS treating this species at this and other sites. All treated areas are being replanted with native coastal sage scrub plants between January 2008 and January 2009. This portion of the project is funded by Proposition 12 funds given to NPS and is considered an in-kind contribution.

For this project, the PVPLC is working to eradicate and control infestations of Euphorbia terracina occurring throughout the south side of the Palos Verdes Peninsula for the 2007 and 2008 calendar year. Control methods are through a combination of hand pulling and herbicide treatment.

This project is focused on completely eradicating all known populations of yellow starthistle (Centaurea solstitialis), Veldt grass (Ehrharta calycina), saltcedar (Tamarix ramosissima), and periwinkle (Vinca major) from Conservancy property (42,000 acres). Control methods are Physical, mechanical, and chemical. physical methods will be hand-pulling will be used on smaller populations of some species. Mechanical control methods will utilize a wide array of hand and power tools, including “weed wrenches” hoes, and power brush cutters. Herbicides will be used on this project when physical or mechanical techniques alone are not effective.