Symposium Registration

Composite image of a woman bent forward to examine a tall whitetop plant with yellow flowers, a group of people in helmets posing with string trimmers, a young man uses an orange weed wrench to pull out a yellow flowering genista plant, two women in face masks work together to pull out a stinkwort plant. Text overlay reads “Cal-IPC 30-Year Anniversary: Expanding Community to Protect Biodiversity, 2021 Cal-IPC Symposium, Oct. 26-29, Online”

Photos (left to right): Jesse Honeycutt, Benjamin Dion, Stacy Schmidt, Laura Caldwell

Celebrate Cal-IPC’s 30-Year Anniversary Symposium: Oct. 26-29, 2021 – Join us Online!

Connect with colleagues from across the state – and beyond – to get the latest updates on effective tools, relevant research, and strategic management approaches. Registration button at the bottom of this page.


A Latino man in a suit and a Latina woman in a red shirt talk in the foreground while a crowd of various people mill about behind them, looking at posters and presentations

Participants connect and share insights during the poster session. Photo: Claire F. Meyler

Join session talks, discussion groups, and posters covering a wide range of topics related to invasive plant biology and management. Chat with sponsors/exhibitors, engage during discussion groups, talk to poster presenters, and meet with friends and colleagues.


  • Invasive plant management to protect biodiversity in California and beyond
  • Strengthening conservation by broadening community access
  • Lesson learned from 30 years of invasive plant management
  • New mapping and treatment tools to increase project effectiveness


  • Statewide WMA Meeting Representatives from California’s Weed Management Areas (WMAs) shared information about securing grants, designing projects, researching plants, selecting tools, reporting finds, acquiring permits, and engaging communities. (Are you a WMA member looking to attend the WMA meeting only instead of the full Symposium? Register for ONLY the WMA meeting here.) – 1.5 hours DPR credit
  • Herbicide Laws & Regulations – Session designed to provide 2 hours DPR credit
  • Early Career Panel – Students and early-career professionals, learn more about careers in weed management with representatives from non-profits, academia, consulting firms, and government agencies.
  • Poster and Lightning Talk Session – Join in discussion with presenters.
  • Exhibitor Gallery – Connect with sponsors and exhibitors.


Note: We are applying for appropriate DPR Continuing Education Credits for Symposium sessions. Last year, we were able to provide 13.5 hours of “Other” credit in addition to the designated 2 hour “Laws and Regs” session. Updates will be posted as they are available.


Student presenters who choose to participate in our student contests for talks and posters receive feedback from expert reviewers. Cash prizes are awarded to top presenters!



Rates: Early Bird through Aug. 20/ Regular through Oct. 15 / Late through Oct. 25. Registration closes Oct. 25, 5pm.

Member: $75 early bird / $100 regular / $125 late
Non-Member: $100 early bird / $125 regular / $150 late
Student Member: $25 early bird / $40 regular / $55 late
Student Non-Member: $40 early bird / $55 regular / $70 late
Presenter: $25 early bird / $40 regular / $55 late
Student Presenter:  $0 early bird / $15 regular / $30 late
Limited income: $0 (see below)

Additional Costs/Discounts:

  • Charge for DPR continuing education credits: $50
  • Discount for attending SERCAL or CNGA: Subtract $25, (Discount code needed)
  • Limited income: Cal-IPC is committed to creating equitable access to our resources. This free rate is designed for members of our community who are on very limited income. Please fill out our survey form so we can report audience demographics to funders who support efforts to expand our audiences. The data gathered is completely anonymous, but may be shared in aggregate form. Discount code for this rate is in the survey form.


REGISTER NOW (Non-Members)

Are you a member? Sign to the Cal-IPC membership portal to take advantage of member discounts.
LOG IN to REGISTER (Members)



2021 Symposium attendees, expand your experience with a field trip to learn about restoration projects in your area. $25 field trip fee.

Fri., Nov. 5: Yolo County Riparian – Half day, 1:00 pm – 5:00 pm
A peek into the world of Arundo control and riparian restoration
Explore Arundo control and riparian restoration with Tanya Meyer and Bethany Drahota, Yolo RCD. Species highlights: Arundo, tamarisk, tree tobacco, and yellow starthistle. Bring water and snacks. Wear closed toe shoes, sturdy clothes, and a sunhat. Park and walk with 3 stops. Easy 1-mile hike.

Sat., Nov. 6: Santa Clara County – Full day, 9:00 am – 3:00 pm
Mindego Hill restoration
View restoration at the Mindego Ranch in Santa Clara County with Coty Sifuentes-Winter and Garrick Hansen, Midpeninsula Regional Open Space District. Species highlights: San Francisco garter snake and California red-legged frog, as well as distaff thistle, purple starthistle, yellow starthistle, and medusahead. Bring a lunch, snacks, and water. Wear closed toe shoes, sturdy clothes, and a sunhat. Park and carpool with 1 stop. Moderately difficult 3.2-mile hike.

Sat., Nov. 6: Santa Barbara County – Half day, 8:00 am – 1:00 pm
Riparian and wetland restoration in the historic cienagas of the Santa Clara River
Learn about restoration work removing Arundo in the historic cienagas of the Santa Clara River in Ventura County. Led by Laura Pavliscak, Santa Clara River Conservancy, and Adam Lambert, UC Santa Barbara. Bring a lunch, snacks, and water. Wear closed toe shoes, sturdy clothes, and a sunhat. Park and walk with 2 stops. Moderately difficult 4-mile hike on uneven terrain, including potential sloshing in calf-deep water.

Sat., Nov. 6: Orange County – Half day, 9:00 am – 1:00 pm
A journey along the invasion curve: Efforts to eradicate and manage invasive plants at Upper Newport Bay
Learn about efforts to eradicate and manage new and entrenched invasive plants at Upper Newport Bay in Orange County. Led by Amanda Swanson, CDFW, and Alys Arens, Newport Bay Conservancy. Species highlights: Brazilian peppertree, desert knapweed, and the newly discovered seaweed Caulerpa prolifera. Bring water and snacks. Wear closed toe shoes, sturdy clothes, and a sunhat. Park and easy 1.5-mile hike.

Please note: Advance registration is required. Absolutely no “walk-ups” allowed. Space is limited, and vary per trip. Limit one field trip per person. Registration for field trips are first-come, first-served. 


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