DALLAS (AP) — Drew Demler is digging in a box of dirt in the middle of Fair Park.

The Dallas Morning News reports he is harvesting potatoes — big, small, misshapen, one that even looks like a snowman — in a hotter-than-deep-fried parking lot just outside the Cotton Bowl.

"I think potatoes and onions are two of the most important crops that we grow," Demler, farm manager at Big Tex Urban Farms , says as he uses his bare hands to search for the tubers. "They're hearty and prolific, and their storage life is long."

Demler and landscape supervisor Barron Horton take about an hour to harvest potato...