Zach Wirtz. (Courtesy of The Morton Arboretum)

CRTI connects organizations — public and private — across the seven-county Chicago area to promote the importance of trees and improve the quality of the region's tree canopy.

(Patty Wetli / WTTW News)
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The six recommended appointees to the board, which was created in June 2021, all received unanimous support during a key committee hearing. Next up is a full Chicago City Council vote.

Chicago is set to invest $46 million in tree planting over the next five years. But the distribution of trees throughout Chicago is far from equal. (WTTW News)
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Chicago is set to invest $46 million in tree planting over the next five years. Trees can help improve air quality, reduce flooding, and offer several other health and social benefits. But the distribution of trees throughout Chicago is far from equal.

The biggest change between the 2010 tree census and 2020's was the loss of 6 million ash trees. (Patty Wetli / WTTW News)

Between 2010 and 2020, Chicago’s canopy cover decreased from 19% to 16%, largely due to the loss of mature ash trees, according to the 2020 tree census spearheaded by the Morton Arboretum. 

(Mabel Amber / Pixabay)

OAKtober Campaign Aims to Raise Awareness, Spur Action

Oak was once the predominant tree in the Chicago area. Now most of them are gone. Ecologists have a plan to make sure they don’t disappear from the region entirely, and they need our help.

Greene Valley Forest Preserve. (Courtesy of DuPage Forest Preserve District)

Oak trees, once abundant in the Chicago region, have been struggling to reproduce in recent decades. A grant from the U.S. Forest Service will help fund a restoration project at Greene Valley in Naperville.

A census of the Chicago region's trees, last tallied at 157 million in 2010, is in progress. (Brian Crawford / Flickr)

The 2020 census of the region’s trees — the largest undertaking of its kind in the country — will build on the inaugural 2010 count and help municipalities set priorities for creating healthier green infrastructure, particularly in underserved communities.

Neighbors in Ravenswood Manor are raising funds to save the area’s parkway ash trees. (Patty Wetli / WTTW News)

The city has given up on its ash trees, but some Chicagoans refuse to let theirs die.