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Jumping worms are the latest invasive species to hit Illinois. In Chicago, they’re basically everywhere.

Noted: Not all earthworms are created equal when it comes to helping soil and gardens,” says Brad Herrick, a University of Wisconsin ecologist who studies the worms. “There are definitely worms that are beneficial for gardens and have been around a long time, but the difference is that the beneficial ones are the ones that work vertically in the soil, creating pore spaces and mixing the soil.”