WORKSHOPS

Learn a new skill while you’re in Riverside: take a pre-conference workshop on February 4!

Logistics

Pre-conference workshops will take place onsite at the Riverside Convention Center or at an offsite location as listed in the workshop description. Pre-registration is required before January 12—workshops have limited capacity and may fill up, register now to secure your spot! Save by registering by November 30: Early workshop registration is $65 for half-day workshops and $125 for full day-workshops. Starting December 1, registration increases to $75 for half-day workshops and $150 for full-day workshops.

Participants are responsible for their own transportation to offsite workshop locations. We strongly encourage carpooling for travel to and from the Riverside Convention Center. Outdoor workshops may be cancelled in extremely inclement weather; refunds will be issued in the event of weather-related cancellations.
📅 Date
Wednesday, February 4
📍 Area
Riverside Convention Center
⏰ Time
8:30 AM – 12:00 PM  
1:00 PM – 4:30 PM
8:30 AM – 4:30 PM
🧾 Registration Deadline
January 12 (early discount until November 30)
Half-day
Early registration $65
Regular registration $75
Full-day
Early registration $125
Regular registration $150

Practical Notes

☔ Weather Policy
Outdoor workshops may be cancelled in the event of extremely inclement weather. Refunds will be issued for any weather-related cancellations.
🚗 Transportation
Participants are responsible for their own transportation to offsite workshop locations. Carpooling is strongly encouraged for travel to and from the Riverside Convention Center.
🧍 Capacity & Pre-registration
Pre-registration is required. Workshops have limited capacity and may fill quickly — register early to secure your spot!
📩 Confirmation
Additional workshop details, room numbers, and instructor information will be emailed to all registered participants prior to the event.

Please arrive 10–15 minutes early for check-in. Some workshops may require materials or special attire; see individual workshop descriptions for details.

workshops

Bryophyte Identification

⏰ Time8:30am–4:30pm 
📅 DateWednesday, February 4
📍 AreaRiverside Convention Center 

Description
Get a useful introduction into what a bryophyte is and what makes them different than the typical land plant. We’ll learn about some common species that grow throughout California so you can see some familiar friends on your next hike. We’ll also cover basic bryo morphology and some important dissection techniques necessary for proper identification of specimens. We’ll end with a group keying session with mosses provided (or any mystery moss you bring in from your adventures!).
👥 Instructors
Jordan Collins (CNPS)
Jordan Collins is a lead field botanist in the Rare Plant Program for CNPS conducting rare plant surveys, voucher, and seed collections all over CA. Jordan is currently a board member for the CNPS Bryophyte Chapter and has contributed towards a bryoflora of the Santa Clara River Watershed in SoCal.
John McLaughlin (Carl W. Sharsmith Herbarium of San Jose State University)
John McLaughlin is the curator of bryophytes at San Jose State University. He received his master’s degree researching the bryophyte flora of Henry W. Coe State Park. John has published peer-reviewed publications studying California native bryophytes and plans to pursue his PhD at Ohio State University in 2026.

Introduction to Plant Identification 

⏰ Time8:30am–4:30pm 
📅 DateWednesday, February 4
📍 AreaRiverside Convention Center 

Description
This workshop will teach basic plant morphology with a focus on the structures necessary for plant identification. Participants will learn the specialized terminology necessary to identify plants in several common California plant families. This workshop is beginner level and open to anyone interested in learning about or improving their knowledge of plant terminology and the characteristics of common plant families.
👥 Instructors
Nicholas Jensen (CNPS)
Nick Jensen is the Conservation Program director for CNPS. In this position, he oversees the conservation work of staff and volunteer advocates statewide. Nick earned his BS in Environmental Horticulture at UC Davis and completed his Ph.D. in botany at California Botanic Garden/Claremont Graduate University.
Adam Searcy (CNPS)
Adam Searcy is the lead rare plant botanist with CNPS, where he ranks rare plants and maintains the Rare Plant Inventory. Adam earned a BS in Ecology and Evolutionary Biology at UC Santa Cruz and has
since worked in a variety of positions for consulting firms, government agencies, and nonprofits.

Top Trifolium Training

⏰ Time8:30am–4:30pm 
📅 DateWednesday, February 4
📍 AreaRiverside Convention Center 

Description
With nearly 80 kinds of clovers in California, there's so much diversity to explore! Clovers (Trifolium species) are common in most areas, have features that mostly don't need magnification for identification, and are lovely and important members of many plant communities. This workshop will cover anatomy and terminology, groupings, and the Jepson eFlora key for the top 50–60 clovers (native and non-native) in California. A feature-based comparative table will be given to participants for their future use.
👥 Instructors
Andrea Williams (Williams Ecological Assessments and Planning, LLC)
Andrea has over 30 years of experience in plant identification, largely in the coastal portions of the California Floristic Province. Known more for teaching grass identification, Andrea loves to identify plants—especially clovers—on iNaturalist while listening to baseball on the radio.
Assisted by Emily Allen (independent restoration and botanical consultant)
Emily is an independent restoration and botanical consultant in Northern California and is on the California Native Grasslands Association board and the board for the Sanhedrin Chapter of CNPS.

Vegetation of the Inland Empire: A Tour of Inventory and Mapping of Sensitive and Common Vegetation of the Region

⏰ Time8:30am–4:30pm 
📅 DateWednesday, February 4
📍 AreaRiverside Convention Center & Field Locations TBD

Description
This workshop gives participants an overview of A Manual of California Vegetation, along with examples of vegetation types (alliances and associations) deemed as sensitive natural communities using a conservation status ranking system. We will provide an overview in the field of both common and sensitive vegetation types of the Inland Empire, focused in Riverside County, and discuss the fine-scale classification and mapping efforts in the region, including applications to land management and conservation.
👥 Instructors
Julie Evens (CNPS)
Julie Evens is the Vegetation Program director for CNPS. She manages and collaborates on vegetation sampling, analysis, and mapping projects across California. Previously, she worked on vegetation mapping projects in Sequoia and Kings Canyon national parks and the central Mojave Desert. She has co-authored California’s Botanical Landscapes and the Manual of California Vegetation 2nd edition. Julie received B.A. degrees in biology and environmental studies from UC Santa Cruz and an M.A. in biology from Humboldt State University.
Jennifer Buck-Diaz (CNPS)
Jennifer Buck-Diaz is the vegetation ecologist manager for CNPS, where she manages vegetation sampling, classification and mapping projects across California. Prior to joining CNPS, Jennifer worked as an ecologist with The Nature Conservancy at the Cosumnes River Preserve. She holds a B.S. and M.S. in Plant Biology from the University of California, Davis.
Betsy Harbert (California Department of Fish and Wildlife)
Betsy Harbert is a vegetation ecologist for the California Department of Fish & Wildlife’s Vegetation Classification and Mapping Program. She works with collaborators to survey, classify, and map vegetation in California. Previously, she worked for various NGOs and agencies to describe vegetation in California grasslands, deserts, wetlands, and mountains. She has restored montane meadow habitats, supported the National Wetland Plant list, and led wetland plant and plant community workshops. She graduated with a masters in Ecology from CSU Colorado.

Accreditation to Improve Restoration (AIR): Best Nursery Practices and Pathogen Monitoring

⏰ Time8:30am–12:00pm 
📅 DateWednesday, February 4
📍 AreaRiverside-Corona Resource Conservation District (RCRCD) 

Description
Visit the Riverside-Corona Resource Conservation District’s accredited nursery! In this workshop, you’ll learn about the best management practices and pathogen monitoring techniques they use to prevent plant pathogen introduction and spread. Instructor Johanna Del Castillo will share approaches to prevent soilborne pathogens, demonstrate scouting, and provide tips for early pathogen detection. Dean Watson will share techniques such as leachate baiting with pears, and both instructors will provide a special opportunity for Q&A.
👥 Instructors
Dr. Johanna Del Castillo (UC Davis)
Johanna’s areas of interest are the basic biologic understanding of fungal and oomycete pathogens, and development of applied research to solve current problems that agriculture faces in the greenhouse to the field continuum. Johanna is particularly interested in developing and improving sustainable solutions for disease control through studies of fungal and oomycete biology, population genetics, and community ecology.
Dean Watson (UC Davis)
Dean is a research associate and lab manager in the lab of Johanna Del Castillo at the UC Davis Department of Plant Pathology where his primary responsibility is to support the Accreditation to Improve Restoration (AIR) Program. Dean’s areas of interest include understanding plant pathosystems,
especially within the context of habitat restoration, environmental protection, and disease diagnostics as well as teaching and science communication.

Esri ArcGIS Hands-on Learning Lab 

⏰ Time8:30am–12:00pm & 1:00pm–4:30pm 
📅 DateWednesday, February 4
📍 AreaRiverside Convention Center

Description
The Hands-On Learning Lab (HOLL) is a dedicated space to take lessons on a variety of GIS and ArcGIS topics. Join this workshop’s morning or afternoon session (or both!) to complete the lessons of your choice at your own pace. Each self-paced lesson takes about 1 hour to complete and includes conceptual information and step-by-step software exercises. Laptops and ArcGIS software needed to complete each lesson are provided. Esri instructors are available to assist with lesson selection and answer any questions you may have.
👥 Instructors
Danielle Hopkins and Lindsey Rogers (Esri)
Danielle and Lindsey are Esri instructors based out of Esri’s Redlands, CA headquarters. They bring experience in analysis, ArcGIS Pro, ArcGIS Online, and Field Apps.

Introduction to the Rare Plants of Riverside County 

📅 DateWednesday, February 4
⏰ Time8:30am–12:00pm 
📍 AreaRiverside Convention Center

Description
Despite the region hosting a human population of over two million, western Riverside County offers a significant diversity of rare plants in habitats that vary from vernal pools and seasonally flooded alkali floodplain to grasslands, chaparral, oak woodland, and a touch of conifer forest. The alkali wetlands are similar to the alkali wetlands of the Central Valley and, not surprisingly, host some of the same species. The region we will be covering is dominated by the Perris Basin and Santa Ana River Valley and fringed with the Santa Ana, Palomar, and San Jacinto Mountains. The Santa Rosa Plateau and San Jacinto Valley are especially notable for rare plants.

The workshop will introduce participants to many of the 80+ rare plant species found in this region (nearly 100 if you consider locally rare species). Participants will learn about the distribution of and status of species through a lecture and presentation that will include the status of individual species, their ecology, and how to identify these species, including a look at similar species that may be confused with them.
👥 Instructors
Fred M. Roberts (Orange County and Riverside San-Bernardino CNPS Chapters, Southern California Botanists)
Fred Roberts first took a real interest in the local flora during high school and has since worked as an assistant curator at an herbarium (IRVC), a botanist at the U.S. Fish and Wildlife Service, and finally as an independent rare plant survey, author, and artist.
Sandy J. Leatherman (Southern California Botanists)
Sandy Leatherman has worked as a field botanist in southern California for 35 years. She conducts rare plant surveys in California and Nevada. She has been a member of CNPS since 1988 and serves on the rare plant and field trip committee for the Orange County Chapter.

How to Design and Build a Resilient Landscape: Fire-wise, Water Saving and Full of California Native Plants

📅 DateWednesday, February 4
⏰ Time8:30am–12:00pm
📍 AreaRiverside Convention Center

Description
Get started on your path to designing and installing resilient landscapes that are fire-wise, biodiverse, water saving and beautiful! Learn how to navigate defensible space, provide waystations for hungry pollinators, understand California's drought cycles, and design a garden with year-round interest. Whether you are a landscape professional or a homeowner/renter wanting to transform your garden, this workshop will give actionable design and installation advice, including suggestions tailored to your projects. Presenters April Owens, executive director of Habitat Corridor Project; Alejandro Lemus, horticultural educator at the Santa Barbara Botanical Garden; and Eric Blank, horticultural educator at Theodore Payne Foundation will bring statewide experience and knowledge from design and installation to science-based research-driven data. Join us for this exciting collaborative workshop opportunity!
👥 Instructors
April Owens (April Owens Design, LLC)
April Owens is the Executive Director of the Habitat Corridor Project, whose mission is to create and promote California native plant restoration gardens in the urban environment. She has been designing gardens using primarily California native plants for over twenty years. April is a founding member of the Resilient Landscapes Coalition and serves on the Board of Directors for the California Native Plant Society. She also leads a landscape design firm that creates resilient landscapes for clients, specializing in landscaping rebuilds since the devastating 2017 fires.
Eric Blank (Theodore Payne Foundation)
Erik, TPF’s Horticultural Educator, is enjoying a second career in horticulture and is charmed by the smells, textures, and forms of California native plants in both horticultural and natural settings. Having
assisted in installing numerous private gardens, his focus is now set on maintenance. After a position at Pitzer College as a groundskeeper for the John R. Rodman Arboretum, Outback Preserve, and Robert Redford Conservancy, he joined TPF in 2020.
Alejandro Lemus (Santa Barbara Botanic Garden)
Alejandro Lemus was born and raised in Los Angeles. Growing up, he assisted his parents with their landscaping business. Some of his earliest memories are of looking at flowers, finding insects in the leaves, and spending many hours in the garden with his family. Alejandro has experience in habitat restoration, horticulture, and education. As Santa Barbara Botanic Garden’s horticultural educator, he is passionate about connecting people with native plants.

Rooted in Connection: Ecological Psychology and Our Relationship with Native Plants

⏰ Time8:30am–12:00pm
📅 DateWednesday, February 4
📍 AreaUC Riverside Botanic Garden

Description
This workshop proposes a unique, introductory exploration for individuals interested in deepening their relationship with California native plants through the lens of Ecological Psychology. Designed for beginners, the session aims to foster a foundational understanding of our interconnectedness with the natural world, specifically focusing on the essential co-living between us and native plants.
👥 Instructors
Tanushree Verma (Verdis Graduate Institute)
Tanushree has a lifelong passion for the natural world. She holds a double major in Environmental Studies and Theater Direction from UCSB, and a masters and Ph.D. in Ecological Psychology from Viridis Graduate Institute. She believes cultivating strong relationships within human and natural ecosystems are essential to our shared survival.

CEQA 101 and Tools for the Conservation Advocate

⏰ Time1:00pm–4:30pm 
📅 DateWednesday, February 4
📍 AreaRiverside Convention Center 

Description
Join CNPS Conservation program staff for an introductory workshop on the California Environmental Quality Act (CEQA), where we will share strategies for engaging in the CEQA process and tools for project-level advocacy. CEQA is an essential tool for protecting the places we care about most, but in recent years, it has been under attack. Understanding how to effectively engage in the CEQA process not only protects important natural communities but also strengthens our ability to advocate for the regulation itself and communicate what we stand to lose with increasing threats of deregulation. In this timely workshop, you will learn the essentials for navigating California's bedrock environmental regulation, tips for writing effective comment letters, and tools for advocating for cherished places close to home.

No prerequisite knowledge is required. Some material may be review for participants with experience writing comment letters or engaging with CEQA. However, the workshop will provide practical tools for all participants to enhance their advocacy impact, including more seasoned advocates.
👥 Instructors
Brendan Wilce (CNPS)
Brendan Wilce is the Conservation Program coordinator for CNPS. He leads project-level advocacy and has reviewed and commented on a wide range of CEQA projects, as well as helped with the development and launch of the CNPS Advocacy Toolkit. The toolkit focuses on breaking down the CEQA process and providing guidance on engaging with CEQA and developing effective comment letters.
Karah Fisher (CNPS)
Karah Fisher serves as the advocacy and outreach senior coordinator for the CNPS Conservation Program. She leads the Advocacy Corps initiative, which aims to strengthen CNPS's grassroots advocacy by building the skills, resources, and network needed to take action during key campaigns. Karah is committed to ensuring advocacy opportunities are accessible for anyone interested in advancing CNPS's mission.

Herbarium 101: Specimen Preparation and Processing

📅 DateWednesday, February 4
⏰ Time1:00pm–4:30pm 
📍 AreaUniversity of California Riverside Herbarium 

Description
What does it take to prepare a beautiful and useful herbarium specimen? Or a specimen label that captures and preserves valuable data? In this hands-on workshop held at the UC Riverside Herbarium, herbarium and CNPS staff will share the ins and outs of specimen preparation from the field to the cabinet. You'll learn efficient collecting procedures; note recording techniques that reduce effort in the field and lab; best practices for collecting, handling, and protecting high-quality specimens; and the efficient mounting methods that allow the UC Riverside herbarium to process 7,000 specimens annually, on average. Join us for an afternoon cultivating these valuable skills, essential for any collecting field botanist and/or herbarium professional.
👥 Instructors
Andrew Sanders (UC Riverside Herbarium)
Andrew Sanders is the curator and museum scientist of the UC Riverside Herbarium, specializing in the plants of Southern California.
Charlotte Miranda (CNPS)
Charlotte Miranda is an associate ecologist with the CNPS Vegetation Program. She holds a BS in Soil Science from Cal Poly SLO, and a MS in Biology from San Jose State University, where she worked as the Assistant Curator of the Carl W. Sharsmith Herbarium. Charlotte is passionate about herbaria and loves sharing her skills.

Let’s Photograph Plants! 

⏰ Time1:00pm–4:30pm 
📅 DateWednesday, February 4
📍 AreaRiverside Convention Center 

Description
Interested in photographing native plants, but need inspiration & information? Then this workshop is for you. Join Bob Allen as he shows images of plants & associated insects, with emphasis on gear, techniques, and a full reveal of behind-the-scenes.

Just as we don't use outdated taxonomy or reference books, everything will be up to date. To keep it fresh & current, only gear released in the last five years will be shown & discussed. We'll dive into some of the latest mirrorless digital camera bodies, lenses, flashes, & diffusers. Why mirrorless? In short, mirrorless gear is smaller, lighter, and quieter than prior technologies (DSLR, SLR, film, glass plate). While gear is important, techniques are vital to success & quality of images. Before recording images, we need to slow down, consider the subject, and determine what we want from an image. Do we want a broad habitat, an individual plant, a close-up of its parts, or a macro image of its small details? This thoughtful approach leads to more keepers & fewer weepers.

Recommended experience level: Intermediate-advanced. All participants should already understand basic camera operation, including ISO, shutter speed, aperture, & depth of field. Content will be tailored to the use of modern mirrorless digital camera bodies, lenses, & flash. Participants are encouraged to bring their own mirrorless rig. (Note that we won’t have time to tutor each person on how to use their individual camera.)
👥 Instructors
Robert L. “BugBob” Allen
Adjunct Professor of Biology, Santiago Canyon College & Orange Coast College; Research Associate in Entomology, Natural History Museum of Los Angeles County; Research Associate, California Botanic Garden; Research Associate of the University and Jepson Herbaria at U.C. Berkeley

Bob Allen grew up in San Juan Capistrano; received his B.S. in Environmental & Systematic Biology from California Poly, San Luis Obispo, & M.S. in Environmental Studies from CSU Fullerton. In 2013, he co-authored the book, Wildflowers of Orange County and the Santa Ana Mountains (which covers coastal California from Santa Barbara to San Diego).

 Propagation Basics 

📅 DateWednesday, February 4
⏰ Time1:00pm–4:30pm 
📍 AreaRiverside Convention Center 

Description
Learn how to multiply your favorite native plants using simple, effective propagation techniques. This hands-on class will cover how to grow new plants from cuttings, divisions, seeds. We will get our hands dirty learning new techniques with your own propagation starting kit. Whether you're new to propagation or looking to enhance your skills, this workshop will empower you with the knowledge and confidence to grow natives and contribute to restoration and resilience in your own landscape.
👥 Instructors
Renee Murphy (Intrinsyx Environmental)
Renee Murphy is an environmental scientist and director of Business Development at Intrinsyx Environmental, a Bay Area firm that cleans contamination using plants and microbes. She holds a masters in plant science from Cal Poly Pomona and teaches native plant propagation at Western Nevada College. Renee speaks internationally on ecological restoration and sustainability.

Stay tuned for updates

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The mission of the California Native Plant Society is to protect California’s native plants and their natural habitats, today and into the future, through science, education, stewardship, gardening, and advocacy.

Contact CNPS
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