Bess Bronstein, Christina Pfeiffer, Keith Dekker & Ingela Wanerstrand

Teaches at UW Botanic Gardens

Bess Bronstein is a horticultural consultant, a previous instructor for the Edmonds Community College horticulture program, and an ISA Certified Arborist. 

Christina Pfeiffer is a horticulture consultant and educator with over 40 years’ experience in landscape horticulture. She brings an emphasis on sustainable garden practices that work in sync with nature to her classes.  She holds degrees in horticulture from Michigan State and the University of Washington, and is an ISA Certified Arborist ®.  For Christina, the next best thing to being in the garden is teaching and writing about gardening.

Keith Dekker has been involved in horticulture for over 45 years. For the last 30 years his career has focused on the comprehensive care of residential landscapes in the Pacific Northwest.

As a Clallam County Master Gardener and active volunteer with PlantAmnesty, Keith contributes to his community by teaching classes and giving talks to promote best practices for successful, sustainable gardening.

Keith lives on the Olympic Peninsula with his wife, and has a business specializing in fine pruning

Ingela Wanerstrand is the owner of Green Darner Garden Design and a frequent horticultural speaker.