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A group from Thomas Kelly High School in Chicago help plant trees. (Credit: Openlands)

The nature conservation group Openlands and search engine Ecosia are hoping to boost the number of trees in underserved areas through their TreePlanters Grant Program. 

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Cherry trees blossoming in Jackson Park. (Chicago Park District)

The cherry tree blossoms in Jackson Park are quickly becoming a beloved springtime tradition in Chicago and they’re about to hit their peak.

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(Patty Wetli / WTTW News)

Studies show temperatures of -30°F will kill 98% of ash borer beetle larvae. Guess when Chicago was last that cold.

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Numerous Chicagoans woke up to scenes of downed tree limbs like this one in Lincoln Square after strong winds blew through the region. Dec. 16, 2021. (Patty Wetli / WTTW News)

Wednesday saw record high temperatures across the region, wind gusts above 60 miles per hour and even the smell of smoke, which rode in on winds all the way from brush fires in Kansas.

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(Patty Wetli / WTTW News)

Chicago has a long history of segregation and racial inequity. Now, a new data analysis by the DePaul University Center for Journalism Integrity & Excellence shows inequity is rooted even in the planting of city trees.

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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)

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.

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Green trees along the North Branch of the Chicago River, Oct. 14, 2021. (Patty Wetli / WTTW News)

Sunny days and cool nights are the key to brilliant fall foliage. If the weather cooperates, expect things to take a turn for the colorful as Chicago’s trees hit their peak within the next two weeks.

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With a tree removed in front of the home on the right, Chicago has a new gap in its tree canopy cover. (Patty Wetli / WTTW News)

The city has been testing alternatives to open-trench digging and tree removal during pipe replacement and repair projects. Failure of one new technique spelled the end of the line for a slew of trees in Chicago’s Andersonville neighborhood.

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Currently, the city’s tree canopy cover is at 16%, a 3 percentage point decrease since 2010, according to a 2020 census of Chicago’s trees led by the Morton Arboretum. (WTTW News)

The City Council has unanimously approved an ordinance to create an Urban Forestry Advisory Board — charged with strategically caring for Chicago's urban tree canopy.

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Chicago has room for 900,000 more trees in under-resourced areas alone. (Facebook / Openlands)

Supporters are calling it a big win for Chicago’s trees, but say the real work begins now. How the new Urban Forestry Advisory Board will bring together public and private partners to care for and enhancing the city’s urban canopy.

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This June 13, 2021 photo provided by the Forest Preserve District of Will County in Naperville, Ill., shows a tree at Whalon Lake Dog Park in Naperville that dog owner Asher Thomas sprayed, along with over a dozen other trees, with a pruning sealer that he thought would prevent further damage after another dog owner's German shepherd had gnawed away the bark. (Anthony Schalk / Forest Preserve District of Will County via AP)

A man who said he sprayed trees in a Naperville park to protect them after an anxious dog chewed off the bark has been ticketed by authorities.

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The thousands of trees damaged during 2020's powerful derecho storm demonstrated the vulnerability of Chicago's tree canopy. (Patty Wetli / WTTW News)

“Trees need care like streets need repairing,” said Malcolm Whiteside, deputy commissioner for Chicago’s Department of Forestry, who threw his support behind the creation of an Urban Forestry Advisory Board.

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Elm seeds are blanketing lawns and sidewalks. (Patty Wetli / WTTW News)

The unusually high volume of seeds falling from trees this spring, especially from the city’s elms, is indicative of drought, said Jeff Brink, senior forester with the Chicago Department of Transportation.

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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. 

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Visitors have been flocking to Jackson Park to catch the cherry trees in bloom. (Courtesy of Chicago Park District)

With its cherry trees finally in full bloom, thousands of people have been flocking to Jackson Park daily. But hurry, the breathtaking blossoms won’t last for long.

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Take a close look at bark. It has a lot of clues about a tree's identity. (Pexels / Elizaveta Dushechkina)

There are quirky details to be found in bark, twigs and buds that can turn a walk in the woods or around the block into a game of “name that tree.”