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

Thank you for joining Cal-IPC’s 30-Year Anniversary Symposium: Oct. 26-29, 2021, Online – Hope to see you next year in person!



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.


  • Expanding the conservation community: Incorporating justice, equity, diversity and inclusion (JEDI) and traditional ecological knowledge (TEK) into our work
  • Protecting biodiversity by controlling invasive plants: Views from Australia, Chile, South Africa, England and Canada
  • Role of invasive plant control in meeting California’s “conserve 30% by 2030” goals
  • 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. – 1.5 hours DPR credit
  • Herbicide Laws & Regulations – 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 have a total of 13 hours approved for DPR Continuing Education Credits for Symposium sessions, 11 hours of “Other” credit in addition to the designated 2 hour “Laws and Regs” session. Applicable sessions are marked on the Program Agenda. Read our full directions on how to get DPR credits


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 (Discount Code: BioDiv2021)

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: BioDiv2021



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 (REGISTRATION FULL)
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: Los Angeles and Ventura Counties – 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 Arenas, 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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