Trees & Shrubs of Northern Sierra Nevada

Dates: June 23 - 25, 2023
Instructor: Tanya Baxter
Fee: $300.00
Term: Summer 2023

Workshop Description

Have you ever wanted to become familiar with the plant life of the Sierra Nevada forest but didn’t know where to begin? This course will provide a less intimidating introduction to help you define the iconic beauty of Sierra trees and shrubs. Through this course you’ll learn to recognize which conifers, oaks, and shrubs grow where. You'll understand the ecology of how each species plays a role in the forest. Both common and scientific names will be used. More importantly, students will come away with knowing how to recognize growth and habitat patterns and how to apply identification to further inquiry into the Sierran plant life. Using our outdoor classroom, we will focus on hikes to capture the spectrum of trees and shrubs across their elevational habitat as high as 8,500 ft.

students use handheld magnifiers to examine leaves on trees
Trees and low bushes on sides of mountain stream

Instructor Bio

Tanya Baxter

Tanya is a botanist and ecologist. A love for the Sierra, she has surveyed 12,000 acres of post-fire flora for Yosemite National Park and recently surveyed rare serpentine pine forests of Plumas County.  Tanya served for the National Park Service for 10 years, much of it as a project manager in restoration ecology. She holds a masters in science from San Francisco State University in Ecology and Evolutionary Biology. A scientist, naturalist and storyteller, she evokes a sense of awe and interconnectedness of botany into the lives of her participants. You may contact Tanya  @ or learn more at her website.

Workshop Details


We will be driving short distances to field sites, and this will require some car pooling. The longest distance will be slightly over 30 miles.

Workshop Supplies List

CLOTHING: Bring good walking shoes. Most days will be gentle with regard to walking, but we may hike to the top of the Sierra Buttes. Plan for all kinds of weather. Days should be warm, but evenings can be cool. Bring short pants for warm hikes, and/or long pants for mosquito protection. It frequently rains in the Sierra in late June. Most of all, bring a hat and sunscreen for protection.

Although days are generally warm, or even hot at lower elevations, be prepared for temperatures as low as freezing at night. Variable weather clothing that may be layered is best. Long pants and a long-sleeved shirt, warm sweater and jacket, t-shirt and shorts or skirt, tennis shoes or hiking boots, sun hat, rain gear, and a warm hat or gloves for cold weather or night activities. Old sneakers, rubber boots, or hip-waders may come in handy for marsh prowling.

TEXT:  Field Guide to the Sierra Nevada by John Muir Laws  (recommended)

Jepson Manual of California Plants, 2nd edition (optional)

MISC: field notebook, 10x hand lens - (best if attached to a loop), 10 cm ruler

Lodging and Camping Supplies

Camping gear if you are staying on campus:

  • tent and sleeping pad (unless you are staying in our tent with a cot provided)
  • warm sleeping bag
  • pillow, toiletries, and towel
  • flashlight and lantern
  • alarm clock

Field gear for everyone:

  • day pack
  • sunscreen
  • insect repellant
  • water bottles
  • plastic containers for packed lunches
  • sense of humor

You might also want to bring:

  • camera
  • binoculars
  • hand lens
  • camp chair


The weather in the Sierra Nevada can vary greatly, even in a single day. Be prepared for chilly temperatures at night, even below freezing early in the summer. Rain is a possibility any time, whether forecast or not. Variable weather clothing that can be layered is best: long pants and a long-sleeved shirt, warm sweater and jacket, t-shirt and shorts or skirt, sturdy shoes or hiking boots, sun hat, rain gear, and a warm hat or gloves for cold weather and/or night activities. And, if you come later in the season, bring your swimsuit for afternoon dips in the lakes!