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University of Illinois Extension serving Cook County

Main Office (Cook County)
8751 S. Greenwood Avenue, Suites 112-122
Chicago, IL 60619
Phone: 773-768-7779
FAX: 773-768-4818
Hours: Monday - Friday 8:30 am to 4:30 pm

Branch Office (Cook County)
1140 N. Lamon
Floor 2
Chicago, IL 60651
Phone: 773-287-8333
FAX: 773-287-8335
Hours: Monday - Friday 8:30 am to 4:30 pm

Branch Office (Cook County)
845 W. 69th Street
Chicago, IL 60621
Phone: 773-651-4011
FAX: 773-651-4047
Hours: Monday - Friday 8:30 am to 4:30 pm

Branch Office (Cook County)
4747 Lincoln Mall Drive
Suite 601
Matteson, IL 60443
Phone: 708-679-6889
FAX: 708-679-6855
Hours: Monday - Friday 8 am to 4 pm

Branch Office (Cook County)
3rd District Court House
2121 West Euclid, Room 251
Rolling Meadows, IL 60008
Phone: 847-818-2901
FAX: 847-818-2904
Hours: Monday - Friday 8 am to 4:30 pm

Branch Office (Cook County)
10244 South Vincennes Avenue
Chicago, IL 60643
Phone: 773-233-2900
FAX: 773-233-9183
Hours: Monday - Friday 8:30 am to 4:30 pm

Branch Office (Cook County)
Enterprise Center
2205 Enterprise Drive, Suite 501
Westchester, IL 60154
Phone: 708-449-4320
FAX: 708-492-1805
Hours: Monday - Friday 8 am to 4 pm

News Release

Accent photo

Celebrate Arbor Day 2015

Arbor Day is celebrated in Illinois on April 24, 2015. Across the United States Arbor Day is mostly a spring event, but some states celebrate Arbor Day in other months. The first Arbor Day took place on April 10, 1872 in Nebraska. It was started by Julius Sterling Morton. His son, Joy Morton founded the Morton Arboretum in Lisle, Illinois. The following are some Arbor Day related web sites that celebrate the beauty and value of trees.

National Arbor Day

Learn about trees, their benefits, value and general care.

Arbor Day History

Learn about the origin of Arbor day started by Julius Sterling Morton.

How to Celebrate Arbor Day

Discover ideas on how to celebrate Arbor Day in your community.

U.S. State Trees

Each of the 50 states and several United States territories have designated an official tree.

What Tree Is That? Mobile and Online Versions

Tree Identification Guides from


This free mobile app uses visual recognition software to help identify tree species from photographs of their leaves.

US Forest Service "Smokey Bear" website provides a host of activities for students, including forest crossword puzzles, activity book, find the fire hazards, coloring pages and a forest word find.

Illinois Forestry

Educational web site about Illinois' most valuable, renewable natural resource �trees.

Forestry Images

Images of tree insects, diseases and more

Oregon State University: Woody Landscape Plants Database

A database of almost 900 woody landscape plants.

Trees Are Good

Educational web site of the International Society of Aboriculture.

Miracle of Fall

Learn why leaves change color, check foliage updates, driving tours, cams, photos, and festivals.

Selecting Trees for Your Home

This site will help you make informed decisions when selecting a tree for your home landscape.

Selecting Illinois Trees

Buying a tree is a major investment. Here's help in choosing the best tree for your location.

Cornell University: Recommended Urban Trees

Helps you choose the best tree for your site, plus profiles of best urban trees.

Tree Web sites for Kids:

Arbor Day Lesson Plans and Teacher Resources

Collections of lesson plans, ideas and resources for celebrating Arbor Day

Trees are Terrific

Listen and read along with Pierre Quercus to learn about trees and their value to us.

Exploring the Secret Life of Trees

Learn all about the parts of a tree and gain an appreciation of trees.

Walk in the Woods

Take a virtual walk in the woods and learn about all the wonders of nature.

Dr. Arbor Talks Trees

Focuses on tree anatomy and physiology. Students will learn some of the basic inner workings, chemical principles, and fun ways to get to know trees better

Kids for Trees

Tree curriculum for kids from the Illinois Department of Natural Resources, includes a teacher's guide.

Vanishing Acts: Trees Under Threat Teacher's Guide

Vanishing Acts: Trees Under Threat is an exhibit at The Morton Arboretum that provides an interpretative lesson plan focused on the importance of endangered trees. A teacher's guide, and other resources, are available for this unique exhibit.�Find lesson plans for grades Pre-K through 12 within the downloadable guide provided. Or, select the grade-specific guide listed.

Source: Ron Wolford, Extension Educator, Horticulture,