The Corn Belt has been abuzz about tar spot since it entered the spotlight in 2018. Looking ahead to summer 2019, experts project the disease’s geographic footprint to expand beyond Illinois and Wisconsin. Join Damon Smith, associate professor of plant pathology and Extension specialist for the University of Wisconsin, as he provides a review of what we learned about tar spot in 2018 and how we can predict its future pressure, identify the pathogen in the field and stem potential yield losses.