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Classes & Workshops

A garden is a grand teacher.  It teaches patience and careful watchfulness; it teaches industry and thrift; above all it teaches entire trust.  –Gertrude Jeckyll


Class sizes are limited. Pre-registration and pre-payment are required. To pre-register contact us at (707) 442-5139 or email our visitor services coordinator.

Garden admission is included in the price of each class.  Classes meet in the Sun Valley Greenhouse unless otherwise noted.  

Cancellation Policy: Cancellations are required 72 hours before the date of the class/workshop; otherwise, class fees are no-refundable.

Kim Chee

Feb 28, 10 am

Call (707) 442-5139 or see flier for more info.

March Madness – Take a Succulent Class or a Native Plant Tour

Mar 7, 11 am

Call (707) 442-5139 or see flier for more info.

Butterflies by Frank McLarnonFrank McLarnon

June 27, 2015, 11 am

See Summary of Butterflies Class and Common Butterflies of the Eureka-Arcata Area


Humboldt Botanical Garden proudly partners with Humboldt State University Extended Education and OLLI: Osher Lifelong Learning Institute to create fun and interesting learning opportunities at the garden for students of all ages.

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Instructor Biographies

Kendra Cross

  • Kendra Cross of Humboldt Herbals is an herbalist, an entrepreneur and an intuitive artist with essential oils and plants. She loves to study and share both the powerful and subtle ways that plants can be incorporated into ones life to heal the body, mind, spirit, and emotion. Kendra is a certified herbalist through Dandelion Herbal Center and has her BA from Humboldt State University. She is a local yoga instructor, musician, dancer and teacher. Kendra is an eternal student of ancient and contemporary healing techniques and looks forward to offering her healing services and herbal creations, Essence of the Goddess*, to the community in the near future.

Mary Gearheart

  • Design-Work, Business Owner & Landscape Designer
  • Former HBGF Board Member

Pete Haggard

  • Local gardening expert with over 3 decades of experience
  • Author, Insects of the Pacific Northwest
  • Teacher, HSU Extension
  • Retired from the Humboldt County Agricultural Commissioner’s Office

Jackie Hamilton

  • KEET Kids Program Director

Terry Kramer

  • Head Gardener, Humboldt Botanical Garden
  • BA, HSU
  • Journalist
  • Retail Nursery Owner & Operator
  • Humboldt Music Academy Faculty

Dick LaForge

  • BA Chemistry, Clark University
  • MA Chemistry, UC Berkeley
  • MS Teaching Credential, HSU
  • Humboldt Music Academy Faculty
  • Local Musician
  • Beekeeper

Chet Ogan

  • Retired Wildlife Biologist
  • Research, USFS
  • Research Biological Technician, USDA Forest Service
  • Vice President, Redwood Region Audubon Society

Louise Bacon-Ogden

  • Strictly for the Birds, Eureka Business Owner & Bird Expert

Joann Olson

  • Mushroom Expert

Mary Roberts

  • Mary Roberts is an avid hiker and loves to explore the natural world.  Her breadth of interests and inclination to learn is reflected in the multiple disciplines she studied at HSU.  She attained minors in Philosophy, Women Studies, and Studio Art, but it was Mary’s irresistible passion for taxonomy that allowed her to thrive in plant identification courses and inspired her to attain a BS in Botany.  She not only loves to learn about the botanical world but she also deeply enjoys sharing her knowledge with others.

Carol Telesky

  • Free-Lance Artist & Painting and Drawing Instructor
  • Certificate in Textile and Surface Design, Otis College of Art and Design Los Angeles Extension
  • BA in Studio Art, Humboldt State University
  • Additional Training:  Huntington Gardens in San Marino, and with Anne Marie Evans in England
  • Founding member of Botanical Artist’s Guild of Southern California

Andreina Torma

  • Andreina’s lifelong passion for nature and plants may have begun when her great grand-mother taught her to say her very first word: “flower.”  Since then, she has always enjoyed the great outdoors, no matter the weather or the climate, and worked as a floral designer for a year and a half.

Tim Walsh

  • Rhododendron Expert
  • National Rhododendron Society Board Member
  • Former HBGF Board Member

Donna Wildearth

  • Instructor, College of the Redwoods
  • Garden Visions, Business Owner & Landscape Designer

Sharon Vollmers

Marea Zendran

  • Marea Zendran of Humboldt Herbals is a Clinical Ayurvedic Specialist, Herbalist and Nutrition Counselor. She graduated from the California College of Ayurveda where she learned to assess the individual needs of a person based on their constitution, lifestyle and nutritional needs. She is a lifelong student of herbalism, nutrition and yoga. She has worked diligently to understand the ability of the human body to heal itself, as well as learning to understand the healing properties of the fascinating world of herbal medicine. She recognizes that this is a lifelong journey and commitment, and is fascinated, on a daily basis, by the medicinal gifts that the plants have to offer. She offers private consultations by appointment. She is a musician, a dedicated yoga student, works on a part-time basis with special education children, and feels blessed to be on the staff at Humboldt Herbals, to share in the wisdom of an incredible collective of dedicated and knowledgeable herbalists.