Hoyt Arboretum Friends (HAF) is a membership-based, nonprofit organization working in partnership with Portland Parks and Recreation to support Hoyt Arboretum.

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Winter Plant Identification

Saturday, January 21
Beginners: 10am-12pm
Intermediate: 1-3pm

Learn all about winter plant identification with instructor Ruth Williams. A beginner and intermediate class will be available - sign up for a single session or both! Class size is limited to 15 students; registration is required. Please sign up below with Paypal, or call 503-823-1649.

Class 1: Introduction to Winter Plant Identification

Have you ever gazed at the frost covered branches of a tree in winter and wondered, "What kind of tree is that?" It can be tricky to identify trees without their familiar leaves, flowers, and fruits. Join us to learn how to identify dormant trees based on twigs and other clues. The course will cover 10 common landscape trees such as ash, maple, and pear at the family level. A classroom and field component are included. Please dress warmly. The beginning class serves as an appropriate introduction to the afternoon Intermediate Plant ID class.

Member / Non-Member

Class 2: Intermediate Winter Plant Identification

If you know some basic botanical anatomy and have some familiarity with a few plant families, you are invited to take your plant ID skills to the next level with this intermediate plant ID class. We will focus on trees in the rose family, and how to tell one genus from another, including apple, pear, cherry and plum. The classroom session will be 40 minutes to emphasize field ID, so please dress warmly.

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Sign up for BOTH classes below.
Member / Non-Member

About the instructor: Ruth Williams is a consulting arborist and tree storyteller who has been a Hoyt volunteer docent for 5 years. She lives in Southeast Portland with two huge California Myrtles, five chickens, and a duck.

Broadleaf Evergreen Identification

Wednesday, February 22

It's very common for people to use the term ‘evergreen’ to refer to only conifers, but this distinction isn't exactly accurate. Many genera of broadleaves, too, have a species that have opted to retain their leaves year-round. Oaks, madrones, magnolias, hollies, and others all have examples of evergreen species. In this course, we're going to focus on identification of some of these broadleaf evergreen species, and discuss how this evolutionary strategy works and why these trees are becoming more and more important in the face of climate change and urbanization.

About the instructor: J. Casey Clapp is an Associate Consulting Arborist with Tree Solutions, Inc., and manages the Portland, Oregon office. He specializes in tree identification, urban forest and individual tree management, tree diagnostics, risk assessments, and tree cones.

Limited to 15 people. $15/member, $20/non-member. Registration is required. Sign up below via Paypal or call 503.823.1649.

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