Below is a quick-reference guide to events currently offered, listed by organization. Details and further information for all events listed can be found in our Calendar. Websites for each organization listed are given for your convenience.
California Botanical Society
California Botanical Society (CBS) offers monthly academic botany talks through their botany speaker series, and sponsors a Graduate Student Symposium every other year. Their website is at https://calbotsoc.org/
- May 14, 2026. Webinar presentation. Botany Speaker Series: Ricardo Kreibel
California Invasive Plant Council
California Invasive Plant Council (Cal-IPC) offers training sessions when their budget allows. Symposia continue to be offered yearly. Visit Cal-IPC at https://www.cal-ipc.org/.
- October 20-22, 2026. Symposium. 2026 Cal-IPC Sumposium: Think Globally, Weed Locally!
California Native Grasslands Association
The California Native Grasslands Association (CNGA) offers various events throughout the year. For details and registration information, please go to cnga.org.
California Native Plant Society
CNPS offers periodic workshops and professional training courses. Discounted registration fees are available to CNPS members. See https://www.cnps.org/education/workshops for full descriptions and registration information.
- May 19-21, 2026. Workshop. Vegetation Rapid Assessment/Relevé
- July 7-9, 2026. Workshop. Rare Plant Survey Protocols
- August 19-21, 2026. Workshop. Introduction to Plant Identification
Friends of the Ahart Herbarium
Friends of the Ahart Herbarium (formerly Friends of the Chico State Herbarium) offers workshops and presentations throughout the year. Their events calendar is at http://friendsoftheahartherbarium.org/
- May 21, 2026. Zoom presentation. Flowering Plants of the Sierra Nevada
- May 23, 2026. Workshop. Grass (Poaceae) Identification
- May 30, 2026. Workshop and training. Bumble Bees in the Field
- June 27, 2026. Workshop. Introduction to the Willows of California (Salicaceae)
Friends of the Jepson Herbarium
Friends of the Jepson Herbarium offers weekend workshops, most of which will be in person, and mini-workshops, all of which are virtual. All require pre-registration and fees. (Wait-listed workshops are not included in the following list.) Details can be found at ucjeps.berkeley.edu/workshops/
- May 16-17, 2026. Workshop. Burls, Drupes, and Nascent Inflorescences: A Deep Dive into Arctostaphylos
- May 30-31, 2026. Workshop. Basic Botany and an Introduction to California Plant Families
Horsetown-Clear Creek Preserve
Horsetown-Clear Creek Preserve (HCCP) sponsors a series of outdoor events each spring and fall. Events typically start at the HCCP parking area on Clear Creek Road, about 7 miles west of Highway 273, just west of the Clear Creek bridge, and are free. Please see horsetownclearcreekpreserve.org for further information.
- May 16, 2026. Field course. Butterfly Walk
- May 30, 2026. Field course. Wading into the Water: The Hidden World of Aquatic Insects
Mount Lassen Chapter CNPS
Mt. Lassen Chapter CNPS, based out of Chico, offers many fun field trips and presentations throughout the year. Their website is https://mountlassen.cnps.org/
- May 16, 2026. Field trip. Upper Park Bioblitz 2026
- May 29, 2026. Garden tour. Tour of Heritage Growers Native Seed Farm Colusa County
- May 30, 2026. Field trip. Birding & Botany at Paradise Lake
North Coast Chapter CNPS
North Coast Chapter CNPS, headquartered in Arcata, is a busy chapter that sponsors plant sales, wildflower shows, walks, talks, field trips, and camping and backpacking adventures. They have monthly evening programs that can be found on their calendar. Their website is https://northcoastcnps.org/
- May 16, 2026. Field trip. Western Azalea Day. Exploration of Two Local Populations
- May 24, 2026. Field trip. Bald Hills Prairie, Redwood National Park.
Pollinator Project Rogue Valley
They offer native plant and pollinator events throughout the year. Visit https://www.pollinatorprojectroguevalley.org/events for more information
- June 6, 2026. Field trip. Wild Weekend on the Klamath: Native Plants and Pollinators
- June 18, 2026. Webinar. Nature’s Best Hope with Dr. Doug Tallamy
- June 28, 2026. Field trip. 4th Butterfly Walk on Mt. Ashland
Shasta Birding Society
Shasta Birding Society offers birding excursions and presentations all year long. Their website is at http://shastabirdingsociety.org/
- May 13, 2026. Presentation. Climate Policy Presentation – Bridget Mulkerin
- May 23, 2026. Field trip. CCWTP Birding Walk
- May 30, 2026. Field trip. Big Day at the Falls: Swifts and Swallows Tour 2
- June 6, 2026. Field trip. Return to Raptors of Butte Valley – National Grasslands
- June 10, 2026. Field trip. Picnic at Camden House – An Annual Event
Shasta Chapter CNPS
Shasta Chapter CNPS sponsors a diverse array of activities and events throughout the year, all of which will be posted on this blog site. Please see our website at https://chapters.cnps.org/shasta/ for more information about our chapter.
- May 2, 2026. Field trip. Jenny Creek Open Space
- May 3, 2026. Field trip. Shingletown to Manton
- May 9, 2026. Field trip. Indian Creek Trail & Flume Trail- Castle Crags State Park
- May 10, 2026. Wildflower show. 33rd Annual Mother’s Day Wildflower Show – Yreka
- May 16, 2026. Field trip. Clikapudi Trail
- May 30, 2026. Field trip. Heart Lake Trail
Shasta Environmental Alliance
Shasta Environmental Alliance (SEA) has many diverse events and activities running throughout the year. See their website at https://www.ecoshasta.org/.
- May 31, 2026. Field trip. Phillip Brothers Mill Tour
Shasta Land Trust
Shasta Land Trust’s Wildways series of fundraising events begin in April and run through the rest of the year. All events require fees and reservations. For further information, visit their site at https://www.shastalandtrust.org/.
Sierra Club | Shasta Group (Motherlode Chapter)
The Shasta Group of the Motherlode Chapter of Sierra Club is based in Redding and focuses on the greater Mt. Shasta area. Their website is https://www.sierraclub.org/mother-lode/shasta
- May 2, 2026. Field trip. Jenny Creek Open Space
- May 3, 2026. Field trip. Shingletown to Manton
- May 30, 2026. Field trip. Heart Lake Trail
Siskiyou Field Institute
Siskiyou Field Institute (SFI), based out of Deer Creek Center in Selma, Oregon, offers many classes and field courses on a diverse set of topics throughout the year. All classes require reservations and fees. SFI’s website is at https://siskiyoufieldinstitute.org/.
- May 31, 2026. Class. Native Plants & Pollinators
- June 7, 2026. Class. Early Summer Mushrooms
- June 13, 2026. Class. Native Seed Collection
The Nature Conservancy
The Nature Conservancy (TNC) sponsors occasional field trips throughout the year. Contact information varies with event, and is provided with every listing. Their Events: https://www.nature.org/en-us/get-involved/how-to-help/events/
Turtle Bay Exploration Park
Turtle Bay’s McConnell Arboretum & Botanical Gardens Nursery offers occasional presentations, weekly walks through their botanical garden, and an annual plant sale. Turtle Bay Exploration Park website is at https://www.turtlebay.org/
- Monthly, on the last Saturday of the month. Garden tour. Guided garden walks with the horticulture manager.
- May 16, 2026. Presentation. Plant Talk: Outdoor Garden Design Essentials
- May 23, 2026. Workshop. Family Nature Journaling
- May 30, 2026. Presentation. Plant Talk: Tree Pruning
US Forest Service
The US Forest Service provides presentations, field trips, and volunteer opportunities throughout the year. Contact information varies with sponsoring forest; details are provided for each event listed.
& More!
Here are the now-and-then events that don’t fit in any of the above categories, but are nonetheless worthwhile and of great interest to California’s native plant lovers!
- May 16, 2026. Plant sale. Klamath Basin Native Plant Society of Oregon Plant Sale
