San Mateo WMA

Co-Chairs: Nancy Poss, San Mateo County Agriculture & Bill Korbholz, Friends of Edgewood Natural Preserve

Contact: Nancy Poss, San Mateo County Agriculture, Nposs@smcgov.org, (650) 726-2514

Meetings: Third Tuesday of every other month, location TBD

Formed in: 2000

Logo designed and created 2019 by Bob Sage, City of Brisbane

Outreach Summary:

Publications

  • Noxious Weeds in San Mateo County – A Serious Threat to Our Environment brochure
  • Managing Yellow Starthistle brochure
  • Field guide: Selected Invasive Plants of San Mateo County: an Identification and Mapping Guide (out of print)

Events

  • Booth at San Mateo County Fair (annual)
  • Volunteer weed management training with Cal-IPC (annual since 2017)
  • Weed mapping workshops
  • Earth Day Event at College of San Mateo (annual)

Project Highlights:

2019 CDFA Noxious Weed Grant Program Projects

  • Green Grass Project at Edgewood County Park and Natural Preserve: San Mateo County Parks and Friends of Edgewood Natural Preserve
  • Jubata grass (Cortadaria jubata) control on Montara State Beach and Montara Mountain: California Department of Parks and Recreation
  • Bermuda buttercup (Oxalis pes-caprae) treatment trials: San Mateo County Parks Department

2020 CDFA Noxious Weed Grant Program Projects

  • Survey and map CCR Section 4500 Noxious weeds and CDFA ‘A’ and ‘B’ rated noxious weeds in San Mateo County: San Mateo County Agriculture
    • – Eradicate a coastal infestation of limited distribution of Heart-podded Hoary Cress (Lepidium draba)

Ongoing Projects:

Pampas and Jubata grass

  • Control of Pampas and Jubata grass populations at several coastal locations. Project Partners: San Mateo County Agriculture, San Mateo County Public Works, San Mateo County Parks, CA State Parks, Golden Gate National Recreation Area, San Gregorio Environmental Resource Center

Canary Island St. John’s Wort

  • Develop plan and associated environmental review in preparation for eradication of St. John’s Wort (Hypericum canariense) in the Gazos Creek Watershed. Project partners: San Mateo Resource Conservation District, Peninsula Open Space Trust, San Mateo County Agriculture.

Weed Management at Edgewood County Park and Natural Preserve

  • Twenty acres of land are being protected at Edgewood County Park in Redwood City. Strategic goals are to protect native grasslands in order to reintroduce Bay Checkerspot butterfly (Euphydryas editha spp. Bayensis). Project Partners: Friends of Edgewood, San Mateo County Parks, San Mateo County Agriculture.

Slender false brome management in and around Thornewood Open Space Preserve

  • Slender false brome (Brachypodium slyvaticum) in Thornewood Open Space Preserve in Woodside continues to be mapped and eradicated. Project Partners: Midpeninsula Regional Open Space, San Mateo County Parks, San Mateo Resource Conservation District.

Purple Loosestrife

  •  A limited infestation of Purple Loosestrife (Lythrum salicaria) is being eradicated in La Honda. San Mateo County Agriculture.

Skeletonweed

  • Continual efforts to treat Skeletonweed (Chondrilla juncea) in and around Edgewood Park and I-280. Project Partners: San Mateo County Agriculture, Friends of Edgewood Natural Preserve, CalTrans, San Francisco Public Utilities Commission.

Fertile Capeweed

  • Work to eradicate a limited infestation of Fertile Capeweed (Arctotheca calendula) in Bean Hollow near Pescadero is ongoing. San Mateo County Agriculture.

Past Projects

  • Removal of pampas and jubata grass by the Pescadero Conservation Alliance
  • Yellow starthistle/wooly distaff thistle incentive program for local ranchers
  • Eucalyptus removal from native serpentine grasslands by San Mateo County Parks
  • Gorse and broom removal along Highway 84 by California Department of Transportation and San Mateo County Parks

Organizations on WMA’s MOU

  • California Department of Parks and Recreation
  • California Department of Transportation
  • California Native Plant Society
  • City of Brisbane
  • Coastside Land Trust
  • County of San Mateo Department of Agriculture
  • County of San Mateo Parks Department
  • County of San Mateo Public Works Department
  • Creekside Center for Earth Observation (Creekside Science)
  • Friends of Edgewood Natural Preserve
  • Golden Gate National Recreation Area
  • Grassroots Ecology
  • Green Foothills
  • Midpeninsula Regional Open Space District
  • Pacifica Land Trust
  • Pacific Beach Coalition
  • Peninsula Open Space Trust
  • San Bruno Mountain Watch
  • San Gregorio Environmental Resource Center
  • San Francisco Public Utilities Commission
  • San Mateo County Farm Bureau
  • San Mateo Resource Conservation District
  • University of California Cooperative Extension