Science-based rationale
CNPS is working to preserve California’s native plants and their habitats. Achieving that mission sometimes requires that we provide clear, science-based rationale for our conservation actions. CNPS Conservation Policies provide the reasoning for positions we take on specific conservation issues. Using a consistent program policy development process, conservation policy topics are selected, developed, and approved by the CNPS Chapter Council.
Policies, positions & guidelines
Policies
Mitigation of Impacts to Rare and Endangered Plants
Application of Ex Situ Conservation Techniques
CBAI-93b Collecting for Educational Purposes
PRI-96 Invasive Plants – 2024 update
PRI-99 Intentional Introduction of Non-Native Species – 2024 update
PRI-08a Herbicide Use – 2024 update
PRI-08b Integrated Weed Management – 2024 update
Statements & Guidelines
Statement Opposing Transplanting as Mitigation
Guidelines on Environmental Impact Documents
Guidelines for Chapters to Reduce Impacts to Native Plants
PS-95 Professional Collecting Guidelines and Documentation Techniques
PS-20 Professional Collecting Ethics and Best Practices
Guidelines for Landscaping to Protect Native Vegetation from Genetic Degradation
Field Protocols & Guidelines
See the CNPS library of CNPS and partner guidelines for mapping, rare plants, rapid assessment and relevé, and more.