Prairie crossing farmMatt and Peg Sheaffer run Sandhill Organics in Prairie Crossing.(Michael Hanson)

For the final stop on the Breaking Through Concrete tour, we’re gettin’ all peri-urban on y’all.

It takes almost an hour to drive from downtown Chicago north on I-94 to the town of Grayslake, Ill., home of the Prairie Crossing residential development — “A Conservation Community” — and its core farm, Sandhill Organics. Though billboards, office “parks,” and standard Interstate culture dot the highway, the tall, mixed prairie grasses native to these Great Lake Plains become increasingly expansive.