List of Events

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/

  • April 5, 2025. Symposium. 30th Graduate Student Symposium.

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/.

  • November 12 to 15, 2025. Symposium. Beyond Eradication: Resistance, Resilience, and Recovery.

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.

  • April 4, 2024. Field day. CNGA’s 17th Annual Field Day at Hedgerow Farms.

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.

  • July 15 to 17, 2025. Workshop. Vegetation rapid assessment/relevé.

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/

  • March 20, 2025. Presentation. The Ahart Herbarium: collections, databases, and collecting for the future.

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/

  • March 23 & 24, 2025. Workshop. Intermediate bryology.
  • May 3 & 4, 2025. Workshop. Introduction to California botany.
  • May 16 to 18, 2025. Workshop. Lichens of Mendocino.
  • June 25 to 27, 2025. Workshop. Celebrating 75 years of the Jepson Herbarium!
  • June 27 to 29, 2025. Workshop. Celebrating 75 years of the Jepson Herbarium!
  • July 7 to 9, 2025. Workshop. Celebrating 75 years of the Jepson Herbarium!
  • July 9 to 11, 2025. Workshop. Celebrating 75 years of the Jepson Herbarium!
  • August 23, 2025. Virtual workshop. Where does food come from?
  • November 14 to 16, 2025. Workshop. Mushrooms and mycorrhizae of Mendocino.

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.

  • March 29, 2025. Work day. Adopt-a-highway clean-up.
  • April 6, 2025. Field trip. Inside the rotary screw trap.
  • April 12, 2025. Field trip. Clear Creek wildflowers and wild plants.
  • April 27, 2025. Field trip. Native plant identification and uses.

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/

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. Their website is https://northcoastcnps.org/

  • Every first Saturday of the month. Garden tour. Native plant garden tour.
  • March 17, 2025. Field course. Introduction to Carex (sedges).
  • March 18, 2025. Field course. Introduction to Carex (sedges).
  • April 6, 2025. Field trip. De los carpelos nacen los frutos / From carpels come fruits.
  • April 26, 2025. Field course. Introduction to Salix (willows).
  • April 27, 2025. Field course. Introduction to Salix (willows).
  • May 2 to 4, 2025. Wildflower show and plant sale. Details TBA.

Shasta Birding Society

Wintu Audubon Society offers birding excursions and presentations all year long. Their website is at https://www.wintuaudubon.org/

  • March 22, 2025. Birding field trip. Lema Ranch.
  • March 29, 2025. Birding field trip. Coleman Fish Hatchery/Battle Creek Wildlife Area.

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.

  • March 20, 2025. Presentation. Turtle Creek flora.
  • March 22, 2025. Field trip. Iron Canyon Loop 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/.

  • March 22, 2025. Field trip. Iron Canyon Loop Trail.
  • April 19, 2025. Festival. Earth Day Redding.

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/.

  • March 22, 2025. Field trip. Tiny trailblazers: nature scavenger hunt on Fenwood Ranch.

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/.

  • March 29, 2025. Field course. Birding Lower Klamath Lake: raptors, waterfowl, & wetland conservation.
  • May 4, 2025. Field course. Spring mushrooms of the Southern Cascades.
  • June 8, 2025. Field course. Early summer mushrooms of the Cascades.
  • June 15, 2025. Field course. Serpentine botany.
  • June 17 to 19, 2025. Field course. Butterflies & moths of the Cascade-Siskiyous.

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.

  • March 22, 2025. Field trip. Vina Plains Preserve guided public walk.
  • March 29, 2025. Field trip. Vina Plains Preserve guided public walk.
  • April 6, 2025. Field trips. Dye Creek Preserve guided public hikes.
  • April 19, 2025. Field trips. Dye Creek Preserve guided public hikes.

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/

  • Every Saturday. Garden tour. Guided garden walks with the horticulture manager.
  • March 22, 2025. Presentation. Drought-tolerant landscaping for pollinators at home.
  • April 5, 2025. Plant sale. 33rd annual spring plant sale.

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!

  • March 22, 2025. Spring fling! Lavender hills forever.
  • July 26 to 30, 2025. Conference. Botany 2025: Botany without Barriers.