Sonoma State University
December 13, 2025

Osborn Mushroom Blitz 2025

white and yellow mushroom cap with grass and leaves

Fairfield Osborn Preserve
Sat, Dec 13, 10:00 am – 1:00 pm

Admission Fees: none
 
Register Here
 

This event is in collaboration with Sonoma Mountain Preservation

Wild fungi give us a window into the health of our ecosystems, play a vital role in plant growth and communication, and can remove heavy metals from soil and water. For the eighth consecutive year, students and the community will traverse the forests and fields of Osborn Preserve to collect and record as many fungal species as possible. Join us and build identification and sustainable harvesting skills while adding to our research database. A sister event is taking place at Galbreath Preserve on December 7th.

Presenter

Dr. Melina Kozanitas, Mycology Course Instructor, Sonoma State University

Logistics

After a brief training, we will break into groups to cover the most ground across the preserve. The maximum hike will be 3 miles with a 500-foot elevation gain, and all hikes are adaptable to participant abilities. Walking sticks might be helpful.

  • Fairfield Osborn Preserve is a 15-minute drive form Sonoma Sate's main campus, on Lichau Road in Penngrove. Driving directions will be provided in your registration confirmation and email.
  • Parking is limited so please consider carpooling, and park close together.
  • The preserve gate will be unlocked 15-minutes prior to the start time of the event. The preserve gate will be locked 15-minutes after the start of the event time. It is not possible to join the event late or to leave the event early.
  • We will meet outside at the Federated Indians of Graton Rancheria Learning Center, which is across the footbridge on the east side of the parking lot.
  • Participants must sign a waiver upon arrival. All minors must be accompanied by a legal guardian for the entire event.
  • Pets and smoking are not permitted.
  • There is a restroom on site.
  • This is a rain or shine event.
  • No previous experience or knowledge is required to participate.
  • Preserve regulations prohibit foraging for food. 

What to Bring

Please bring sun, rain, and insect protection, a water bottle, lunch or snack, and shoes to hike in. Layered clothing and long pants are recommended.

How to Sign Up

See registration link above. Each person should register separately and indicate if they are bringing children. This event is free of charge.

About the Center

Sonoma State University’s Center for Environmental Inquiry empowers university students to work with community members on the environmental challenges of the North Bay. Our mission is to create an engaged and environmentally ready society, one where all people have the skills to find solutions to the challenges facing our earth. SSU Preserves are open to everyone engaged in education or research. Reservations are required.

Contact Email: [email protected]
Contact Phone: 7076644056

Sonoma State University acknowledges the Coast Miwok, Central and Southern Pomo, and the Wappo as the traditional stewards of our preserved lands. Let it be acknowledged that the Sonoma State University campus is located within the traditional homelands of the Federated Indians of Graton Rancheria. Sonoma State offers deep gratitude to the original stewards of this land and recognizes its immense historical, spiritual, and personal significance to the Native nations and peoples of this region.