Source: California Invasive Plant Council

URL of this page:
NPS spraying HYPE
Controlling weeds in Yosemite NP


program | trainings | field trips |

Thanks for joining us in 2016. Stay tuned for next year!

Register online here or download the PDF Form and return it to us by email or fax.

Cal-IPC Members receive discounted registration. If you are not a current Cal-IPC Member, you can still receive the discounted rate by joining or renewing on your registration form. (The online form shows your current expiration date.)

Dates: Last day for early-bird pricing is Sept. 15. Last day for regular pricing is Oct. 26. After that, registration is at the door.

Member: $295 early bird / $320 regular / $345 at the door

Non-Member: $350 early bird / $375 regular / $400 at the door

Student: $50 early bird / $75 regular / $100 at the door (full-time student or first year post-graduation)

Symposium Volunteer: $195 (4-6 hours of help at the event; limited spots) all spaces filled

Presenter discount: $25 (one person per paper or poster)

Registration covers the DPR Laws and Regulations session Wednesday evening and all sessions Thursday and Friday. Meals included are continental breakfast both Thursday and Friday, lunch Thursday, and the Social Hour and Banquet on Thursday evening. Wednesday trainings and Saturday field trips have an additional charge (see below).

Refunds: A full refund will be given to requests received by Oct. 19. A partial refund of 50% will be given to requests received by Oct. 26. After Oct. 26 no refund will be given. To request a refund, email bmckinley(at)



DPR CEUs have been approved for: Trainings as noted below, as well as 2.0 "Laws & Regulations" for evening session on Nov. 2, 5.5 "Other" for sessions on Nov. 3, and 6.0 "Other" for sessions on Nov. 4. CEUs are not being offered for Field Trips.


Map of Weed Free Forage providers in CA

Using Certified Weed-Free Forage and Mulch [11:00am-5:00pm, $60.00, 4.5 DPR CEUs "Other"]

Straw mulch is commonly used in restoration projects, but it can introduce weed seeds to the land you manage. So can hay used for horses or livestock. This training will help you understand what it means for a bale of hay or straw to be certified weed-free. You'll come away with the ability to specify, source, and inspect hay or straw for use in wildlands. Learn from recent experiences mulching after the Rim and King fires, and ongoing work in National Parks and National Forests with hay for pack stock. Certification is a work in progress in California -- this workshop will bring you up to speed on all the current and evolving resources. Instructors from the US Forest Service, National Park Service, County Agriculture Commissioners and the California Dept. of Food and Agriculture.

Calflora WM

Calflora's Weed Manager Applications [1:00-5:00pm, $50.00, 3.5 DPR CEUs "Other"]

Did you know you can map weeds on your smartphone, using a custom interface designed for your organization? That you can record details each time you treat a population? Calflora's Weed Manager suite of tools is designed to do this and more. Calflora staff and current users will show you how it all works.

Invasive Plant Management 101 [11:00-5:00pm, $60.00, 4.0 DPR CEUs "Other"]

Are you new to the field of invasive plant management? Or have gaps in your understanding about how everything ties together? Here's your chance to get a solid foundation and learn about: how land managers identify, map and prioritize weeds; how weed biology affects weed control methods; the range of control tools at our disposal as part of the Integrated Pest Management toolbox; strategic approaches for program success; and more! Taught by experienced Cal-IPC field course instructors.


Field Trips:

Sierra National Forest / Nelder Grove of Giant Sequoias [Half-day, 8:30am-12:30pm, $25.00] all spaces filled

Join Forest Service natural resource managers on a driving tour from Fish Camp south to see the leading edge of yellow star thistle and medusahead moving up into the mountains. We'll travel up Sky Ranch Road to a meadow to discuss recently discovered Sulphur cinquefoil and a challenging medusahead problem. Our trip will end with a short walk in the Nelder Grove of Giant Sequoias, where bull thistle is the primary weed to date.

Merced River Canyon Merced River Canyon (in March, 2016!) photo by David Greenwood

Merced River Canyon [Full-day, 8:30am-4:30pm, $50.00]

Visit sites along the Merced River where an exciting multi-agency campaign has knocked back dense infestations of yellow starthistle, Italian thistle and tree-of-heaven. At the Merced River Recreation Area visitor center we?ll get the lay of the land, then visit the Willow Placer Campground, Good Gulch, Railroad Flat, an old suspension bridge, and Incline Road, where the US Forest Service partnered with National Park Service crews to conduct extraordinary treatments on steep rocky slopes using rope systems and high-powered truck-mounted spray rigs. Finally at El Portal we?ll discuss efforts to keep invasive plants from moving into Yosemite National Park.

Yosemite Valley Tour: Weeds and Waterfalls [Full-day, 8:30am-4:30pm, $50.00] all spaces filled

Searching for blackberry Grid search for blackberry
photo by Garrett Dickman

See the weedy side of Yosemite Valley through the lens of three species. Himalayan blackberry, planted by early settlers, took over 120 acres of riparian habitat. Decades of manual control barely reduced the population, but recent herbicide treatments have been much more effective. Velvet grass is a perennial that?s well established in the valley?s wetlands and meadows. We?ll discuss what has worked and not worked. Finally, hear about our work controlling annual grasses on dry sites and testing perennial grasses and flowers from lower elevations to see if particular genotypes may be especially resilient to climate change. Along the way, we?ll stop at: Tunnel View with an overlook of the Valley; Bridal Veil Falls, The Fen by Happy Isle; Ahwahnee Meadow; and El Capitan Meadow.