About 97,000 square feet of Kentucky bluegrass was grown on plastic sheeting in Colorado. Last fall it was transported to St. Paul by 26 refrigerated trucks and planted among all the concrete in the Midway neighborhood. A sophisticated underground heating system keeps the field playable from late winter through all kinds of weather into late fall.
United hired Hazeltine National Golf Club assistant superintendent Ryan Moy to care for every blade on a site that’s dwarfed by Hazeltine’s vast acreage. He put the grass to bed in early December, letting it fall to just above freezing temperature, and dialed up the heat to 60 degrees or more by March.