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As cicadas leave Chicago, Navy Pier says it will be a ‘cicada-free’ zone – NBC Chicago

As cicadas slowly begin to emerge from the ground with plans to spread throughout the area, an iconic Chicago landmark will soon be declared a “Cicada-Free Zone.” Kind of.

According to the organizers, the statement is “more playful than conclusive.” Still, the site, Navy Pier, may be less attractive to cicadas because of its man-made construction and water environment, according to a news release.

“In a friendly game of puns, popular spots along South Pier will post their own warnings to unwanted winged guests, such as ‘All Suds. No Bugs’ (Navy Pier Beer Garden), ‘Take a spin without the noise’.’ (Century Ferris Wheel), ‘Lakeside Glamor Without the Clamor’ (Sable Hotel), ‘Cheezborger! Cheezborger!’ and many more,” the statement says.

According to officials, the official declaration will take place on Thursday morning. Organizers will wear “The Great Cicada Escape” T-shirts, while performers will sing a parody of “Cecilia” by “Simon & Garfunkel,” aptly named “Cicada.”

It is unknown whether the cicadas that will emerge in Illinois will visit the dock or not. However, experts say they are much more likely to hang out in wooded areas.

When will cicadas emerge in Chicago?

For the past 17 years, billions of Brood Once they emerge, typically in mid-May, they will be present for four to six weeks, Lawrance added.

And once they dig, “there’s really no way to escape them,” Lawrance said, especially in and around trees, where you can expect “piles” of cicada shells after the insects have feasted. with the liquid from the branches and woody bushes.

“You’ll just see them flying around, hanging from trees, and you’ll hear them everywhere you go,” Lawrance said.

According to Insect Asylum experts, the peak of the emergency is expected to reach mid-May in the Chicago area. Sightings have already been reported throughout the area, but there are many factors that will determine when the cicadas will begin to emerge en masse from the ground.

“The periodical cicadas have been emerging for the last week and a half,” Stephanie Adams, a plant pathologist at the Morton Arboretum in Lisle, said last month about Brood XIII, which will soon spread throughout the Chicago area. “We find them here in our landscape and also in our eastern forests.”

Cicadas generally emerge when the ground begins to warm in the spring and early summer, that is, between mid-late May and early June.

According to Adams, the appearance of the first cicadas occurs about two weeks earlier than the historical average. However, it will remain sporadic, as soil temperature, mulch and grass affect cicadas differently. For example, the ground is warmer near pavement, so cicadas in those places are expected to emerge faster.

The ideal soil temperature for cicadas is 64 degrees, but an increase in humidity levels can also play a role, Insect Asylum reported.

What areas will you see the most?

According to experts, the distribution will be irregular.

Not all neighborhoods will be as dense as others,” Lawrance said. “One area may be a little quieter and you’ll hear them in the distance. And then you go to the next neighborhood and there are jumps and they’re everywhere.”

However, there is one determining factor: if they were there before, they will be there again.

“So the neighborhoods you would expect to find them in will depend on where they were the last time they emerged,” Lawrance said. “If the ground had been completely excavated and replaced due to construction, there might have been fewer cicadas there. But if they were there last time, chances are they would still be there.”

The same thing happens for the next 17 years.

After emerging this spring and summer, female cicadas will lay their eggs on the tips of tree branches. Over time, those eggs will hatch and fall to the ground, Lawrance said. The nymphs then hide underground and their 17-year life cycle begins again.

What trees do cicadas gravitate toward?

In general, cicadas are “non-particular,” meaning they use a variety of trees and shrubs as hosts; They are known to lay eggs on preferred plants.

“While most cicadas are considered generalists, with a wide range of host plants, they have preferences like all living creatures,” a post from the Morton Arboretum said.

According to the Arboretum, cicadas “tend not to prefer” plants where sap or gum could prevent eggs from hatching. Some of those trees include conifers such as pines, firs, and firs. Those trees may also include cherry, peach, plum or persimmon trees, the Arboretum said.

FURTHER: The only thing you can do to potentially limit the number of cicadas in your garden, experts say

While not picky, the insects are known to lay eggs on certain trees, the Arboretum said, including oaks, maples, walnuts, apples, birches, dogwoods, lindens, willows, elms, ginkgos and pears.

“Cicacadas can also lay eggs on some shrubs, such as roses, lilacs and forsythias,” the Arboretum said.

Arboretum records show that during the emergency 17 years ago, some of the plants most affected by the emergency were maples, cherry trees, ashes, hawthorns, willows, mountain ash, oaks, pear trees, roses, privets, poplars, serviceberries and beech.

cicada map

The northern Illinois brood, or brood XIII, will be seen more in parts of northern Illinois and Indiana, and possibly even in Wisconsin, Iowa, and parts of Ohio. This calf will be the most featured in the Chicago area for the next appearance.

Cicadas have a lifespan of about four weeks, meaning the appearance will last until at least mid-June.

Meanwhile, Brood XIX cicadas, or Great Southern Brood cicadas, have a more widespread population, covering parts of Missouri, Illinois, Louisiana, North Carolina, Virginia and Maryland.