Winter Tree ID (Online and In-Person)

students review a dichotomous key in front of Thornhill Education CenterLearn to identify trees after they shed their leaves for the winter. Develop the skills to identify winter trees on your own using clues found in buds, fruits, leaf scars, bark, and branching patterns. Before your in-person class, get basic skills and terminology with a short, online lesson. Then spend your time at the Arboretum in the field with an expert, learning to ID trees on the grounds. The first session will focus on common trees planted in urban settings, such as street ways and parks. The second session will focus on trees found in the woodlands of northern Illinois. Sign up for one, or both! Winter Tree ID  will benefit the natural resources employee or volunteer, the urban forester, as well as the casual tree enthusiast.

Instructor: Phil Riske, horticulturist/Christopher Benda, botanist
Notes: Each session includes extended time outdoors, so please dress for winter weather. Be prepared to walk over a mile off trail and on uneven surfaces. Limit 18
Supplies: A hand lens will be useful; some will be available to borrow. 
Recommended Text: Winter Tree Finder, by May T. Watts and Tom Watts, $4.95, available in The Arboretum Store.
Certificate information: Recommended class for Woodland Stewardship participants

Course number

N100

Schedule and Location


Coming in January 2019.
Registration opens November 2018.

Fees and Admission

Nonmembers: Fees include admission to the Arboretum. 

$39.00 member
$46.00 nonmember

Registration Information

ONLINE: REGISTER NOW 
CALL: 630-719-2468 (or to be waitlisted)
IN PERSON: Stop by the Visitor Center during open hours.