Regional Invasive Plant Management

This project implements the Invasive Plant Strategic Plan (IPSP; TransNet EMP Land Management Grant #5001322), a strategic plan for the management and monitoring of invasive plant species on a regional level. The County of San Diego's Department of Agriculture, Weights and Measures (AWM), under an agreement with the San Diego Association of Governments (SANDAG) is tasked with the initial implementation of the IPSP. Invasive plants in the plan are addressed and removed in order of their priority level.

General Management
Threats and Stressors
in progress
Project Focus

County of San Diego Department of Agriculture, Weights, and Measures

Jason Giessow

Sarah McCutcheon

Sarah McCutcheon

Jason Giessow

Strategic Elements
  • FY15-16 - 2.1
Project Location
Baja California, Riverside, San Diego
Central-central, Central-east, Central-west, North-central, North-east, North-west, South-central, South-east, South-west
1, 10, 11, 2, 3, 4, 5, 6, 7, 8, 9

Invasive plants

Goal: The overarching goals for addressing invasive plant species in the MSPA are to: (1) Protect Conserved Lands from new or expanding invasive plant species; (2) Detect new invasive species and new invasions early on and control them before the plants have a chance to establish; (3) Address invasive species using the response appropriate for the level of invasiveness (level 1 through 5) as defined in the Invasive Plant Strategic Plan (IPSP)

regional and/or local NFO 2017, 2018, 2019, 2020, 2021
MGT-IMP-IPSP INVPLA-1

Management units: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11

From 2017-2021, continue implementing the IPSP by removing Levels 1, 2, and 3 invasive plant species before their distribution becomes too abundant to control.

Action Statement Action status Projects
IMP-1 Continue to provide funding and support to the existing County of San Diego AWM effort to implement the IPSP and remove and control Level 1, 2, and 3 invasive plant species within the MSPA. In progress Oncosiphon Pilulifer (Stinknet) Management, Regional Invasive Plant Management, Crest Canyon Invasvive Plant Control Project, Riparian Restoration and Arundo Removal, Veldt Grass Removal - San Elijo Lagoon Ecological Reserve, Invasive Plant Control - Silverwood Wildlife Sanctuary, North County Dunes Restoration
IMP-2 Work with San Diego County AWM to update the annual Work Plan and include new Level 1, 2, or 3 invasive species encountered that are determined to need priority management using the same criteria as the IPSP. In progress Oncosiphon Pilulifer (Stinknet) Management, Regional Invasive Plant Management, Crest Canyon Invasvive Plant Control Project, Riparian Restoration and Arundo Removal, Veldt Grass Removal - San Elijo Lagoon Ecological Reserve, Invasive Plant Control - Silverwood Wildlife Sanctuary, North County Dunes Restoration
IMP-3 Submit project metadata, data, and report to MSP web portal In progress Oncosiphon Pilulifer (Stinknet) Management, Crest Canyon Invasvive Plant Control Project, Riparian Restoration and Arundo Removal, Veldt Grass Removal - San Elijo Lagoon Ecological Reserve, Invasive Plant Control - Silverwood Wildlife Sanctuary, North County Dunes Restoration
Criteria Deadline year
Reduction in =50% of the IPSP Levels 1 and 2 Species by 2021 2021
Threat Name Threat Code
Invasive plantsINVPLA
File name Lead Author Year Type
2015 Annual Work Plan - Implementation of Invasive Species Plan Recommendations Giessow, Jason 2015 report
2015-2016 Final Report & 2017-2018 Work Plan Giessow, Jason 2017 report
February 2019 Wards Weed Update Giessow, Jason 2019 powerpoint presentation
Invasive non-native plant Early Detection and Rapid Response (EDRR) targets in western San Diego County Giessow, Jason 2019 report
July 2018 Update - Invasive non-native plant EDRR targets in western San Diego County Giessow, Jason; Martinez, Mark; Vinje, Jessie 2018 powerpoint presentation
Management Priorities for Invasive Non-native Plants: A Strategy for Regional Implementation, San Diego County, California Cal-IPC; Dendra Inc; Conservation Biology Institute 2012 report
November 2018 Update - Invasive non-native plant EDRR targets in western San Diego County Giessow, Jason 2018 powerpoint presentation
Plant Assessment Forms (PAFs) for the Invasive Plant Strategic Plan (IPSP) Giessow, Jason; Gordon-Reedy, Patricia 2012 fact sheet
San Diego Invasive Weed Update: Work on three CDFA San Diego weed management area grants Giessow, Jason; Martinez, Mark 2019 powerpoint presentation
Stewarding California's Biodiversity: Early Detection and Rapid Response (EDRR) for Invasive Plants Johnson, Doug; California Invasive Plant Council ; California Landscape Stewardship Network 2020 report
Strategic Control of Invasive Weed Species 1st Quarter Report - FY 2023-24: Report #35 for Project July 1st, 2023 – September 30th, 2023 Giessow, Jason 2023 report
Strategic Control of Invasive Weed Species 2nd Quarter Report - FY 2023-24: Report #36 for Project October 1st, 2023 – December 31st, 2023 Giessow, Jason 2023 report
Strategic Control of Invasive Weed Species 3rd Quarter Report - FY 2023-24: Report #37 for Project January 1st, 2024 – March 31st, 2024 Giessow, Jason 2024 report
Strategic Control of Invasive Weed Species 4th Quarter Report - FY 2022-23: Report #34 for Project April 1st, 2023 – June 30th, 2023 Giessow, Jason 2023 report
Strategic Control of Invasive Weed Species 1st Quarter Report - FY 2019-20: Report #21 for Project January 1st, 2020 -March 31st, 2020 Giessow, Jason 2020 report
Strategic Control of Invasive Weed Species 1st Quarter Report - FY 2020-21: Report #23 for Project July 1st, 2020 - September 31st, 2020 Giessow, Jason 2020 report
Strategic Control of Invasive Weed Species 1st Quarter Report - FY 2021-22: Report #25 for Project January 1st, 2021 - March 31st, 2021 Giessow, Jason 2021 report
Strategic Control of Invasive Weed Species 1st Quarter Report - FY 2021-22: Report #27 for Project July 1st, 2021 - September 30th, 2021 Giessow, Jason 2021 report
Strategic Control of Invasive Weed Species 1st Quarter Report - FY 2021-22: Report #31 for Project July 1st, 2022 - September 30th 2022 Giessow, Jason 2022 report
Strategic Control of Invasive Weed Species 2nd Quarter Report - FY 2020-21: Report #24 for Project October 1st, 2020 - December 31st, 2020 Giessow, Jason 2020 report
Strategic Control of Invasive Weed Species 2nd Quarter Report - FY 2021-22: Report #28 for Project October 1st, 2021 - December 31st 2021 Giessow, Jason 2021 report
Strategic Control of Invasive Weed Species 2nd Quarter Report - FY 2021-22: Report #32 for Project October 1st, 2022 - December 31st, 2022 Giessow, Jason 2022 report
Strategic Control of Invasive Weed Species 3rd Quarter Report - FY 2021-22: Report #29 for Project January 1st, 2022 - March 31st 2022 Giessow, Jason 2022 report
Strategic Control of Invasive Weed Species 3rd Quarter Report - FY 2022-23: Report #33 for Project January 1st, 2023 – March 31st, 2023 Giessow, Jason 2023 report
Strategic Control of Invasive Weed Species 4th Quarter Report - FY 2019-20: Report #22 for Project April 1st, 2020 - June 30, 2020 Giessow, Jason 2020 report
Strategic Control of Invasive Weed Species 4th Quarter Report - FY 2020-21: Report #26 for Project April 1st, 2021 - June 30th, 2021 Giessow, Jason 2021 report
Strategic Control of Invasive Weed Species 4th Quarter Report - FY 2021-22: Report #30 for Project April 1st, 2022 - June 30th, 2022 Giessow, Jason 2022 report
Strategic Removal of Invasive Weed Species 1st Quarter Report - FY 2015-16: Report #4 for Project July 01, 2015 – Sept 30, 2015 Giessow, Jason 2015 report
Strategic Removal of Invasive Weed Species 1st Quarter Report - FY 2019-20: Report #19 for Project July 1st, 2019 – September 30th, 2019 Giessow, Jason 2019 report
Strategic Removal of Invasive Weed Species 1st Quarter Report - FY 2019-20: Report #20 for Project October 1st, 2019 – December 31st, 2019 Giessow, Jason 2019 report
Strategic Removal of Invasive Weed Species 2nd Quarter Report - FY 2015-16: Report #5 for Project October 1, 2015 – December 31, 2015 Giessow, Jason 2015 report
Strategic Removal of Invasive Weed Species 3 rd Quarter Report - FY 2016-17: Report #9 for Project January 1, 2017 – February 28, 2016 Giessow, Jason 2016 report
Strategic Removal of Invasive Weed Species 4th Quarter Report - FY 2018-19: Report #18 for Project April 1st, 2019 – June 30th, 2019 Giessow, Jason 2019 report
Strategic Removal of Invasive Weed Species 1st and 2nd Quarter Report - FY 2016-17: Report #8 for Project July 1, 2016 – December 31, 2016 Giessow, Jason 2016 report
Strategic Removal of Invasive Weed Species 1st Quarter Report - FY 2017-18: Report #11 for Project July 1st, 2017 – September 30th, 2017 Giessow, Jason 2017 report
Strategic Removal of Invasive Weed Species 1st Quarter Report - FY 2018-19: Report #15 for Project July 1st, 2018 – September 30th , 2018 Giessow, Jason 2018 report
Strategic Removal of Invasive Weed Species 2nd Quarter Report - FY 2017-18: Report #12 for Project October 1st, 2017 – December 31st, 2017 Giessow, Jason 2017 report
Strategic Removal of Invasive Weed Species 2nd Quarter Report - FY 2018-19: Report #16 for Project October 1st, 2018 – December 31st, 2018 Giessow, Jason 2018 report
Strategic Removal of Invasive Weed Species 2nd Quarter Report - FY2014-2015 October 1,2014- December 31, 2014 Giessow, Jason 2014 report
Strategic Removal of Invasive Weed Species 3rd Quarter Report - FY 2014-15: Report #2 for Project January 01, 2015- March 31, 2015 Giessow, Jason 2015 report
Strategic Removal of Invasive Weed Species 3rd Quarter Report - FY 2015-16: Report #6 for Project January 1, 2016 – March 31, 2016 Giessow, Jason 2016 report
Strategic Removal of Invasive Weed Species 3rd Quarter Report - FY 2015-16: Report #6 for Project January 1, 2016 – March 31, 2016 Dendra Inc 2016 report
Strategic Removal of Invasive Weed Species 3rd Quarter Report - FY 2017-18: Report #13 for Project January 1st, 2018 – March 31st, 2018 Giessow, Jason 2018 report
Strategic Removal of Invasive Weed Species 3rd Quarter Report - FY 2018-19: Report #17 for Project January 1st, 2019 – March 31st, 2019 Giessow, Jason 2019 report
Strategic Removal of Invasive Weed Species 3rd Quarter Report - FY 2020-21: Report #25 for Project January 1, 2021 - March 31, 2021 Giessow, Jason 2021 report
Strategic Removal of Invasive Weed Species 4th Quarter Report - FY 2014-15: Report #3 for Project April 01, 2015 – June 30, 2015 Giessow, Jason 2015 report
Strategic Removal of Invasive Weed Species 4th Quarter Report - FY 2015-16: Report #7 for Project April 1, 2016 – June 30, 2016 Giessow, Jason 2016 report
Strategic Removal of Invasive Weed Species 4th Quarter Report - FY 2016-17: Report #10 for Project May 18th, 2017 – June 30th, 2017 Giessow, Jason 2017 report
Strategic Removal of Invasive Weed Species 4th Quarter Report - FY 2017-18: Report #14 for Project April 1st, 2018 – June 30th, 2018 Giessow, Jason 2018 report
Tarping Protocol for Eucalyptus Control Cal-IPC protocol