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Conservation and Advocacy Update – 2026 August
Explore Orange County Conservation & Advocacy Updates from CNPS, including habitat restoration, native plant protection, environmental news, and ways to take action. -
2026 OC Emergent Invasive Plants
This list represents the 2026 prioritization of the newest and potentially most environmentally disruptive non-native plant species in Orange County. …
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2025 November 10 – Support for the Fairview Park Master Plan Update
Conservation:Comment letter submitted supporting the Fairview Park Master Plan Update in Costa Mesa. The California Native Plant Society Orange County…
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Supporting the Endangered Species Act – Where Science meets Conservation
In 2025 May, anti-environment lobbyists tried to weaken the U.S. Endangered Species Act – again. In response, local botanist Ron Vanderhoff sent a com…
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2025 OC Emergent Invasive Plant List
This list represents the 2025 prioritization of the newest and potentially most environmentally disruptive non-native plant species in Orange … -
2024 OC Emergent Invasive Plants
This list represents the 2024 prioritization of the newest and potentially most environmentally disruptive non-native plant species in Orange County. …
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2024 Invasive Watch List Species
The plants below are NOT yet reported from Orange County, but are in adjacent areas. We believe these are likely to appear in the county soon. Please…
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Known Locations and Status Updates
Select an invasive species from the list below to see the locations of known Orange County occurrences, as well as a status update from the chapter. P…
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Invasive Watch List Species 2022
Invasive Watch List
The plants below are NOT yet reported from Orange County, but are in adjacent areas. We believe these are likely …
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Links to Invasive Plant Organizations and Info
Links for Invasive Plants
Statewide organizations that have information about invasive plants occurring in Orange County:
Cal-IPC
CalFlora
P…
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