Why we do it

The answer is as clear as a sunny afternoon on the trail. See the dozens of joggers, bikers, and children walking with parents—all surrounded in natural beauty. You’ll understand.

Native Plants

naturally good neighbors
Over centuries, native plants evolved together with birds, butterflies and other species to create a balanced, healthy environment.

Alien Invasion!

Not little green men, but little green plants from across the seas—often beautiful, but frequently evil. Many are brought here as decorative ground cover. Sometimes they arrive as hitchhikers.

Monarch Hatchery

Observe, both in the wild or at our children-friendly hatchery, the monarch butterfly growing from egg to caterpillar, caterpillar to chrysalis, and chrysalis to majestic monarch.

Volunteer and Support

We need your help. The Friends of the Green Bay Trail is an entirely volunteer organization. Join us when you can.

Upcoming Events

Fun Facts – Did you know?

Witch Hazel

Witch Hazel can be seen on the Green Bay Trail in Glencoe. Its branches were once used to search and find underground sources of water and minerals.

Poison Pills

Don’t eat a Monarch! The Monarch butterfly stores a poison called cardiac glycosides that they ingest when feeding on the leaves of the milkweed foliage as caterpillars. The poison protects them from vertebrate animals like birds, frogs and lizards, but not invertebrates like praying mantises.

Acorn of Truth

Oaks are very popular in the small vertebrate world. A mature oak may produce up to 10,000 acorns in a single year. This is a major source of food for over 100 species of vertebrates, which is why it takes so many acorns for even one to germinate and produce another tree.

The Restoration Has Begun!

The Friends and the Village of Winnetka have begun restoration of the natural areas along the Trail running through Winnetka.  Click here to see a description of the project.  Better yet, come down and see the start of the restoration of native species to this section of the Trail.

Green Bay Trail Day - A Sunny Success

Many thanks to our generous sponsors, the organizations and individual exhibitors, and more than 40 volunteers who helped make Green Bay Trail Day an enjoyable and festive event.

Views from the Trail Videos

We are pleased to showcase two videos in the Gallery – “A Summer’s Day on the Trail” and “Scenes from the Trail.”

What we do


We are environmental stewards of the Green Bay Trail, restoring a natural,  prairie eco-system. Our goal is to make the trail a national example of the healthy intersection of nature and culture that inspires community and individual well-being. LEARN MORE

The Green Bay Trail is on the Map!

The Green Bay Trail has met the Homegrown National Park challenge. The Trail’s restoration showcases results achieved by implementing practices advocated by the Homegrown National Park initiative.

Homegrown National Park  cofounders Doug Tallamy, author of Bringing Nature Home, and  Michelle Alfandari,  advocate using public and private spaces to support and expand biodiversity; “In the past, we have asked one thing of our gardens: that they be pretty. Now they have to support life, sequester carbon, feed pollinators, and manage water.”

83% of U.S. land is privately owned.  Tallamy and Alfandari  challenge property owners to select ecologically effective plants, shrink lawn size and remove invasives on these  sites. These efforts will significantly restore the needed diversity to offset increasing climate change impacts.

*Accept the challenge. Start this fall and view the results next spring.

Get on the Map
Become a Homegrown National Park

Native Keystone Plants for Wildlife

Garden for Wildlife

About Native Plants

From the Field Museum

A Trail for all Seasons

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