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Winter Tree and Shrub Identification for Western WA Puget Lowland Habitats

This 1-day class will emphasize winter field character identification of the woody wetland species and associated upland buffer plant species found in the Puget lowland region of Washington (approximately 12 trees and 60 shrubs, including willows). Class instruction will be oriented towards the needs of shoreline planners, delineators, and those involved with Ordinary High Water Mark determinations, and restoration.


The format will be a lecture/laboratory setup and taxa examined will include common lowland, freshwater plant species. Twigs will be provided, and winter characteristics (buds, leaf scars, pith, and bark) will be covered in the winter season. Each class will begin with a short lecture covering the terminology and salient morphological characteristics needed for a taxonomic identification of the species of choice, field characteristics, some ecological aspects of the species’ common habitat, commonly associated species, distribution, potential use for restoration purposes, and any special ecological requirements. Lecture materials will include drawings, slides, and plant material. (6.5 CM AICP Credits/CEP Points)


Suggested texts: Cooke. 1997. A Field Guide to the Common Wetland Plants of Western Washington and Northwestern Oregon. Seattle Audubon. Available through University Books Store, Audubon Books Store and Amazon.com.


Not required but recommended. (I supply much of the information) Gilkey, Halen. Winter Twigs. revised Edition: A Wintertime Key to Deciduous Trees and Shrubs of Northwest Oregon and Western Washington.


Lunch is provided.


Instructor: Dr. Sarah Cooke specializes in wetland creation, restoration and enhancement projects, both in design and implementation. She excels in permitting assistance on the local, state, and national level. She has conducted scientific research on wetland ecosystems for the Puget Sound Wetland and Stormwater Management Manual. Her expertise includes restoration designs, wetland inventories, wetland delineation, OHWM studies, baseline studies, impact assessments, monitoring programs, rare plant surveys, soil surveys, vegetation mapping, and watershed analysis in the region.

Event Properties

Event Date 02-26-2020 9:00 am
Location Padilla Bay National Estuarine Research Reserve

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