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Identify Woodland Wildflowers (Online and In-person)

Schedule and Location

Wednesday, April 24, 2019: Registration closes at 11:59 p.m.

Section A:

  • Thursday, April 25, 2019: Online materials become available
  • Friday, May 3, 2019, 9:00 a.m. to 3:00 p.m.: In-person session meets at Thornhill Education Center

Section B:

  • Friday, April 26, 2019: Online materials become available
  • Saturday, May 4, 2019, 9:00 a.m. to 3:00 p.m.: In-person session meets at Thornhill Education Center

Fees and Registration

$45.00 member
$55.00 nonmember
(Fees include admission to the Arboretum)

BY PHONE: 630-719-2468 (Monday-Friday, 9:00 a.m. to 4:00 p.m.)

Course Description

Learn the names and habits of the wildflowers that cover the woodland floor in spring. In spring, ephemeral wildflowers cover the woodlands in an explosion of colors. In this intermediate workshop, learn to identify these plants, discover where they grow, how their life cycles work and what plants they most often grow with. 

Through study online, in the classroom, and in our spring woods, you’ll gain a deeper appreciation of the beauty and diversity of woodland plants and their role and importance in a functioning woodland ecosystem.

The online component of this class is self-guided and can be completed wherever you have access to a computer, at your own pace. Online assignments will be due before the session.

Course number



Chris Benda, botanist

Chris Benda, aka Illinois Botanizer, is a botanist and past president of the Illinois Native Plant Society. He teaches at Southern Illinois University and The Morton Arboretum. He is an accomplished photographer and author of several publications about natural areas in Illinois. Find him at www.illinoisbotanizer.com.

Course Details


  • This class includes both online and in-person sessions. Online assignments must be completed before the in-person class.
  • The online materials will take approximately 3 hours to complete.
  • Participants will have access to the online materials for 60 days after the course start date.
  • Please dress for the weather during the in-person sessions, with long sleeves and long pants/sturdy footwear.
  • Limit 20


  • Participants must have completed Basic Plant ID (W010) or have equivalent experience with botanical terminology.
  • Participants must have access to the internet and know how to use a web browser (ex: Chrome, Safari, Internet Explorer)
  • Participants must know how to send and receive email.
  • A unique email address for each participant is required at registration.

Supplies: Please bring a water bottle and materials for writing in the field. We will take a one hour lunch break - please bring a sack lunch. A hand lens and a favorite wildflower book will be helpful.
Continuing education: This class fulfills a requirement for the Natural Areas Conservation Training (N-ACT) Program. (Learn more about N-ACT.) 

Arboretum class weather, cancellation and refund policies