Resources and publications

Invasive species strategic documents

• The Invasive Species Strategic Plan, IMISWG, 2014 (PDF 1.6MB)
• Invasive Plant Program Strategic Plan, FLNRORD, 2014 to 2019 (PDF 758KB)
• Invasive Alien Species Framework for B.C. September, 2004, (PDF 1.5MB)
• B.C. Invasive Species Early Detection Rapid Response Plan, 2014 (PDF 3.3MB)
• Zebra and Quagga Mussel Early Detection and Rapid Response Plan for B.C.(2015) (PDF 3.2MB)
• Soil Movement: Contamination and Invasive Species, 2016 (PDF)

Economic impacts of invasive species

• Preliminary Damage Estimates for Selected Invasive Fauna in B.C. 2013 (PDF 5.3MB)
• Economic Impacts of Invasive Plants in British Columbia, IPCBC, 2009 (PDF 3.28MB)

Thompson-Nicola invasive plant management pilot project

• Invasive plant management in the Thompson-Nicola (Initial pilot plan report, 2017)(PDF 1.9MB)
• 2017 TNRD invasive plant pilot update report (PDF 2.2MB)
• 2018 TNRD invasive plant pilot update report (PDF 1.3MB)
• 2019 TNRD invasive plant pilot update report (PDF 4MB)
• 2020 TNRD invasive plant pilot update report (PDF 3MB)

Managing invasive species 

• Proposed Prohibited Noxious Weeds (2019) (PDF 147.5KB)
• 7 Steps To Managing Your Weeds (2004) (PDF 997KB)
• Guide to Weeds in British Columbia (2002) (PDF 5.7MB)
• Haida Gwaii Knotweed Herbicide Treatment Demonstration Project (July, 2013) (PDF 1.1MB); a report on the demonstration of various herbicide treatment methods employed on Japanese, Himalayan, and Bohemian knotweed infestations on Haida Gwaii
• B.C. Aquatic Invasive Species Survey Methods (2015) (PDF 1480KB)
• Nimpkish River Knotweed Eradication Project Summary Report (2018 to 2021) (PDF, 1MB)

Pest Management Plans

Pesticide Use Permits

Provincial public land treatment prescriptions

• 2019 Herbicide Guidelines for Control of Knotweeds on Crown Lands ​(PDF 165KB)
• 2020 Treatment Prescriptions for control of Marsh Thistle on Provincial Public Lands (PDF 409KB)

Invasive species guides and best practices

• Yellow Floating Heart Residential Mechanical Control Methods on Seymour Lake (PDF, 1.1MB)
• Flowering Rush Residential Mechanical Control Methods on Hatzic Lake (PDF, 630KB)
• Field Guide to Noxious Weeds and Other Selected Invasive Plants of British Columbia (PDF 2.74MB)
• An Identification Guide to Prohibited Aquatic Invasive Species in British Columbia (PDF 3.33MB)
• Best Practices For Preventing The Spread Of Invasive Plants During Forest Management Activities (2013) (PDF 4.14MB)
• Best Practices For Managing Invasive Plants on Roadsides (PDF 11.81MB)
• Best Management Practices for Invasive Plants in Parks and Protected Areas of British Columbia (PDF 13.87MB)
• Best Practices For Managing Invasive Plants on Oil and Gas Operations (PDF 6.69MB)
• Aquatic Invasive Species Best Practices for the Boating Industry (PDF 759.1KB)
• Report-a-Weed app user guide (PDF 1.8MB)
• Prescribed Fire and Invasive Plants: A Reference Guide and Manual of Best Practices (PDF, 4.9MB)
• Guidelines for the Excavation, Transport & Disposal of Invasive Knotweeds & Knotweed Infested Soil (PDF, 428KB)

Biological control

• Field Guide to the Biological Control of Weeds in British Columbia (PDF 6.4MB)
• Impact of Biological Control on Two Knapweed Species in British Columbia (PDF 5.8MB)
• Biocontrol Agent Lifecycle Schedule - November 2019 - updated 2022 (PDF 580KB)
• Biocontrol Agent Handling Techniques - April, 2016 (PDF 949KB)

Biocontrol Agents - operational field guides

Bioagent	Attacks	Agent type	Published
Agapeta zoegana (PDF 534 KB	Diffuse knapweed, Meadow knapweed, Spotted knapweed	Root feeding moth	March 1998
Cochylis atricapitana (Appendix I) (PDF 1.1MB) Longitarsus jacobaeae (Appendix H) (PDF 1MB) Tyria jacobaeae (Appendix G) (PDF 1.2MB)	Operational Field Guide to the Establishment of Tansy Ragwort Biocontrol Agents in B.C.. Contains the descriptions and details for all three bioagents as separate appendices. You may also download each appendix individually at left.	Root crown feeding moth; Root feeding flea beetle; Foliar feeding moth	June 2013
Cyphocleonus achates (PDF 524KB)	Diffuse knapweed, Spotted knapweed	Root feeding beetle	March 1998
Larinus minutus (PDF 1.7MB)	Diffuse knapweed, Meadow knapweed, Spotted knapweed	Seed feeding beetle	March 1999
Larinus obtusus (PDF 3.8MB)	Diffuse knapweed, Meadow knapweed, Spotted knapweed	Seed feeding beetle	July 2002
Larinus planus (PDF 1.7MB)	Bull thistle, Canada thistle, Nodding thistle, Plumeless thistle	Seed feeding beetle	May 2001
Mecinus janthinus (PDF 1.6MB)	Dalmatian toadflax, Yellow/common toadflax	Stem mining beetle	May 2000
Mogulones crucifer (PDF 4MB)	Hound's-tongue	Root feeding beetle	May 2004
Rhinusa antirrhini (PDF 2.3MB)	Dalmatian toadflax, Yellow/common toadflax	Seedhead feeding beetle	May 2008
Urophora cardui (PDF 4.3MB)	Canada thistle	Stem gall-forming fly	December 2009

Technical reports and dichotomous keys

• Key to Identification of Invasive and Native Hawkweeds in the Pacific Northwest (2023) (PDF 10.1MB)
• Key to Identification of Invasive Knotweeds in British Columbia (PDF 904KB)
• The Decline of Diffuse Knapweed in British Columbia (PDF 488KB)
• Impact of Biological Control on Two Knapweed Species in British Columbia (PDF 5.9MB); a research report on the long-term efficacy of a suite of biological control agents released on Diffuse knapweed and Spotted knapweed in B.C.'s Southern Interior
• St. John’s wort control in British Columbia by the Chrysolina beetles (PDF, 570KB)
• Technical Report 135 Trichosirocalus horridus Effect on Nodding Thistle (Carduus nutans) 2021
• Technical Report 136 Survival of the Biological Control Agent Rhinocyllus conicus on Marsh Thistle (Cirsium palustre) in British Columbia 2021
• Technical Report 140 Longitarsus jacobaeae Swiss Biotype Effect on Tansy Ragwort (Senecio jacobaea) in Naramata, British Columbia