California Invasive Plant Council
Over the past 30 years, Cal-IPC has supported the needs of natural resource managers and researchers by addressing policy, science, and education related to invasive plants. We train professional and volunteer land stewards, sharing education through:
• The annual Cal-IPC Symposium .
• Training courses
• Publications - Don’t Plant a Pest brochures, a quarterly newsletter, books,
06/16/2026
Thank you SERCAL for hosting an awesome conference last month. Lots of great talks and conversations. Cal-IPC Board members Michelle Daneri and Justin Valliere were in attendance tabling for Cal-IPC. We appreciate the opportunity and look forward to the next one!
06/11/2026
We’re sad to share that Jake Sigg, friend, conservation icon, and founding member of Cal-IPC passed away yesterday morning at 99 years old after a long and inspiring life. Jake was a passionate advocate for native plants, biodiversity, and ecological restoration. After moving to San Francisco in 1950, he worked as a city gardener for more than 30 years. Later he became a full-time advocate for restoring local native plant habitat and preserving biodiversity.
Let us celebrate him and all that he has done for stewardship in California!
06/06/2026
Hiking is a great way to explore nature, but did you know invasive species can hitchhike on your boots, clothing, and gear? Seeds, mud, and plant fragments can travel from trail to trail without us even noticing. Before and after your next hike, take a few moments to brush off your boots, clean your gear, and remove any mud or debris. These simple actions help protect forests, grasslands, wetlands, and trails from the spread of invasive species. For more info, visit https://playcleango.org/.
🥾Clean your boots
🎒Check your gear
🌿Protect the places you love
06/04/2026
Cal-IPC's Climate Match Tool has been updated! Compare climates across the globe to see whether a plant grows in conditions similar to your region. The tool helps predict whether a plant is likely to establish and become invasive in new areas. Now with updated precipitation, plant hardiness, and ecozone data as well as the ability to select any region across North America.
Check out the tool here: https://w**dmap.cal-ipc.org/climatematch/
06/02/2026
California Invasive Species Action Week is coming up June 6-14, 2026. This week-long event is put on by the CA Department of Fish and Wildlife to promote awareness of invasive species in the state and support public involvement in invasive species management.
The schedule of events and lunchtime webinars is already available. For more info, visit https://wildlife.ca.gov/Conservation/Invasives/Action-Week
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| Tuesday | 9am - 5pm |
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| Thursday | 9am - 5pm |
| Friday | 9am - 5pm |