"How did earthworms invade Minnesota?"

The Star Tribune recently spoke with researcher Lee Frelich to answer the question "how did earthworms invade Minnesota?" Earthworms aren't native to the state – and their feeding habits damage the soil structure of our forests, resulting in a decrease in native plants, such as trilliums, and an increase in invasive plants, including buckthorn. Read the full article "How did earthworms invade Minnesota" to learn how they've became so prevalent in Minnesota and destructive to our forests. 

Image description: New from the Star Tribune: "How did earthworms invade Minnesota? They aren't native to the state. and the toothless, wriggly creatures are destroying our forest floors." A pink earthworm is pictured at bottom.