There are many pests and diseases that cause decline in oak trees. This workshop will explore the common pests of oaks, including a discussion of the biology of the pests and common symptoms and signs of infection. In addition to the common pests, learn about a new and potentially devastating invader in California’s oak woodlands, the Mediterranean Oak Borer!

Create a seasonal and local color palette from Northern California plant-based dyes with artist, designer, and educator Sasha Duerr.  Together we’ll learn to “cook with color” and make a unique and biodiverse palette of botanically-dyed samples, finished take-home textiles exploring a range of surface design techniques in the process . . . and connect to a vibrant array of California fall colors.

At 9,037 feet, Mount Eddy is the highest peak in the Klamath Mountains.  Be prepared to be enchanted by its dazzling botanical treasures while hiking to its summit!

Back by popular demand!  Learn more about California native plants while you create a unique holiday wreath.  Many of our native chaparral shrubs and forest trees are evergreen, and can remain fragrant for years after drying.   Join us for an afternoon of creativity and good cheer!

Forest professionals are often asked to assess the health of trees within private and public lands. But making decisions on the health and probability of mortality trees can be complicated. There are many factors to assess and this workshop will present information to aid in the assessment of the health of trees, particularly California native conifers and oaks. Workshop participants will be shown examples in the field of the most common native forest insects and diseases that impact local forest health.

Cottonwoods and willows are the most common riparian hardwood species in California and yet many of us have little idea of how to tell them apart. The goal of the workshop is to instill confidence about vegetative characteristics used in the identification keys in The Jepson Manual and familiarize participants with some of the most common willows in California.

Join monkeyflower expert Steve Schoenig on an exploration into the beauty and diversity of monkeyflowers (genus Diplacus, Erythranthe, Mimetanthe). Steve will provide hands-on advice for the—sometimes tricky—identification of monkeyflowers and give an overview of the fantastic diversity of mokeyflowers in the state.

Please join Calflora’s Executive Director Cynthia Powell to learn about new Calflora tools for native plant professionals, gardeners, and enthusiasts! How can you better use this incredible resource to learn more about regional plants?

Sorry, this workshop is full.

A group considered difficult by many people, the 90+ California manzanitas are actually easy to identify once you understand the characters and how they vary. Join authors Tom Parker and Mike Vasey to learn about this iconic group of Western North American plants.

Sorry, this workshop is full.

What comes to mind when you think of the winter holiday season? Do you think of evergreens and baking spices? Did you know that many of our native chaparral shrubs and forest trees are evergreen, and that native sages can remain fragrant for years after drying? Learn more about native plants while you create a holiday wreath, kissing ball, or garland!

Cottonwoods and willows are the most common riparian hardwood species in California and yet many of us have little idea of how to tell them apart. The goal of the workshop is to instill confidence about vegetative characteristics used in the identification keys in The Jepson Manual and familiarize participants with some of the most common willows in California.

Butterflies are among the most charismatic and easily identified pollinating insects. Join CSU, Chico entomology professor, Dr. Don Miller, to get an introduction to some of the butterfly species found in Butte County, with a special emphasis on their relationships with larval host plants. Dr. Miller will also be conducting the annual butterfly count at the Big Chico Creek Ecological Reserve on the day following the workshop and participants are welcome to join.

Sorry, this workshop is full.

Grasses dominate many California landscapes, yet their identification presents a challenge to beginner and experienced botanists alike. This workshop will help you learn the morphological features and terminology used in The Jepson Manual keys so you can confidently key out those tricky species. Dried specimens of more than 20 genera and 45+ species will be provided for participants to key together as a group and as individuals.

The March 4th workshop is full, but we are offering a second Grass Identification workshop on Saturday, March 11, 2023, 9:00am – 4:30pm

Grasses dominate many California landscapes, yet their identification presents a challenge to beginner and experienced botanists alike. This workshop will help you learn the morphological features and terminology used in The Jepson Manual keys so you can confidently key out those tricky species. Dried specimens of more than 20 genera and 45+ species will be provided for participants to key together as a group and as individuals.

What comes to mind when you think of the winter holiday season? Do you think of evergreens and baking spices? Did you know that many of our native chaparral shrubs and forest trees are evergreen, and that native sages can remain fragrant for years after drying? Learn more about native plants while you create a holiday wreath, kissing ball, or garland!

Join us for the 2022 Friends of the Chico State Herbarium Annual Meeting, including a presentation from the Jim Jokerst Field Botany Award winner, Kaylie DeLuca. Botanist Michael Williams also present his research on the unique flora of Adak Island, the “Birthplace of the Winds”.

View a Recording of the Annual Meeting and Special Presentations Here

A group considered difficult by many people, the 90+ California manzanitas are actually easy to identify once you understand the characters and how they vary. Join authors Tom Parker and Mike Vasey to learn about this iconic group of Western North American plants.

Learn about the origins of color, work with select rock and plant samples, and take a local walk to learn about different species that can create exquisite colors for calligraphy, printing and painting. Each participant will learn paint grinding techniques, and take home a sample card of local colors, along with an instructional pamphlet on how to reproduce the process.

***This Workshop is Full***

In the aftermath of fires, professionals are often asked to assess the health of trees within private and public lands. But making decisions on the health and probability of mortality in fire‐injured trees can be complicated. Join experts in the field to learn how to assess if a tree will survive fire related injuries, insect activity post‐fire, post‐fire decay and the potential hazards of decay.
International Society of Arboriculture Continuing Education Units are available for this workshop.

*** This Workshop is Full ***

Is your native plant garden looking a little scruffy? This day-long workshop will cover the cultivation and maintenance of native plants in the garden. We will discuss planting, irrigation, pruning and some propagation of various trees, shrubs, herbaceous perennials and annuals. Presented by native plant experts John Whittlesey and Rob Schlising.

For many people the word “bee” is synonymous with the non‐native “honey‐ bee.” But there are many kinds of bees in nature, even within urban areas in northern California. This workshop will showcase native bees for people who like nature, and for those who are involved in land management and conservation. Presentations will range from basic and introductory to technical.

Cottonwoods and willows are the most common riparian hardwood species in California and yet many of us have little idea of how to tell them apart. The goal of the workshop is to instill confidence about vegetative characteristics used in the identification keys in The Jepson Manual and familiarize participants with some of the most common willows in California.

Physical river processes drive riparian ecology. This field-based workshop will examine riparian ecology along the middle Sacramento River from the perspective of flowing river water: How has flowing water determined the location of plant species across the floodplain; How has the flowing water shaped the physical structure of the vegetation. This year’s river flooding should give us a lot to explore and to discover about the riparian ecology of the middle Sacramento River.

This one‐day workshop will focus on identifying to genus the lichens of the lower Sierra Nevada/Cascade foothills. Led by Tom Carlberg, President of the California Lichen Society.

Join botanical Illustrator Joan Keesey for this one day workshop focusing on accurate botanical drawing and graphite techniques.

Unfortunately we need to cancel the wreath workshop this year, but we hope you have a happy holiday season!

Learn about mountain meadows, why they are so important, how they are threatened, and what is being done to manage and restore them.