If you lose a tree in your parkway, it is unlikely to be replaced before 2015, thanks to resources being devoted to coping with the pesky emerald ash borer (EAB), according to the city official in charge of Evanston trees.

Paul D’Agostino, assistant director of public works for the past 26 years, was keynote speaker at the Evanston Green Living Festival Saturday at the Ecology Center.

The festival theme was “Preserving and Protecting the Urban Forest,” and D’Agostino, who is Evanston’s general in the war against the EAB, said his last three years have been the most difficult of his career, thanks to that native Chinese insect.

A sign of the times as Evanston tackles the devastation of the emerald ash borer.

Of the 27,000 trees in Evanston’s parkways and countless more in its many parks, some 4,000 of them were ash trees susceptible to the insect’s voracious appetite, he said. In fact, some 100 ash trees in Lovelace Park became infected, and virtually all of them have succumbed to the EAB.

Half of the 4,000 ash trees in Evanston have been removed, D’Agostino said, and he held out little hope for the remaining 2,000.

A number of treatments have been tried, he said, but none has been more than about 50 percent effective. Meanwhile, the infected area “grows exponentially” until now it has spread from Detroit, where it was first detected in the United States, to some 22 states, including virtually all of Illinois, where it first showed up in 2006.

The devastation at Lovelace Park has convinced local authorities to set a maximum target of 10 percent of any one variety of trees to be planted in the city.

“Mr. Bamboo,” Richard Morgan, extols the virtues of bamboo flooring at his exhibit.

The festival, which ran from 9 a.m. to 3 p.m., attracted hundreds of Evanstonians to exhibits designed to help attendees lower their carbon footprint.

Displays included the 128-square-foot “Tiny House” built by Northwestern University students that has now been relocated on a permanent basis to the Ecology Center.

Solar panels, bamboo flooring, hybrid and all-electric automobiles, composting, bike recycling, wind energy, and utility conservation, were all topics being discussed by more than 80 participating green businesses and organizations in what was dubbed the “Green Market.”

Izzy Presto, 4, in the children’s area of the Festival.

There was even an area for youngsters to create tree cookies, make maple seed helicopters, and play environmentally related games

Top: D’Agostino explains Evanston’s war on the emerald ash borer. 

Charles Bartling

A resident of Evanston since 1975, Chuck Bartling holds a master’s degree in journalism from Northwestern University and has extensive experience as a reporter and editor for daily newspapers, radio...

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  1. “A number of treatments have

    "A number of treatments have been tried, he said, but none has been more than about 50 percent effective."

    Here's a link to a scientific assessment done of U of I, Purdue, Michigan state and other researchers that indicates there is an insecticide that is 99+% effective against EAB:

    The study is six or seven years old. It's not new news.

    Dozens of municipalities in the Chicago area are treating all of their ash trees so that they can slowly, over many decades, replace them with a more diverse urban forest without losing the benefit of old growth trees.

    Evanston chose to look away from the science, let all the trees die, and let current residents incur 100% of the removal and replacment costs in a truncated period of time.

  2. saving ash trees and not cutting them

    There have been a few instances in Evanston and elsewhere of trying to save the Ash trees by use of treatments. In one instance that I know of, the 900 block of Wesley Avenue has been paying, out-of-pocket, tor have all of their parkway ash trees and any private ash trees injected with Tree-Age which, the article that was linked by another poster, indicated was effective for at least two to three years. They did their own research, bididng and contracting with little or no support from the City.

    As of now, they are going into their fifth year of treatments and have not lost any ash trees, despite the fact that there have been EAB infestatons on nearby blocks that did not choose going this route.. They had to go it alone, as I understand it, because the City indicated they would simply cut down the trees becuse that was more cost-effective. 

    Apparently the cost of having a crew cutting down, chipping and shredding plus buying and planting small new trees has been determined by the City of Evanston as a better option than saving thirty year old mature trees by spending an average of $40 per tree.

    I went through the Chicago Public School system. Maybe they did a poor job of teaching me math.




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