Prior to settlement by Europeans, prairie blanketed an enormous swath of central North America, from Canada south to Texas, and from Indiana west to Colorado — nearly 600,000 square miles of grassland all told. This complex ecosystem was home to a diverse and teeming web of life, including now-tattered bison populations. Farming and development have reduced much of this iconic American landscape, particularly in the wetter eastern areas. There, tall-grass prairie, a habitat dominated by grasses that can grow eight feet high, now occupies less than 1 percent of its former range, putting it among the world’s most endangered ecosystems, according to the US National Park Service. In the central prairie zone, so called “mixed-grass” ecosystems have suffered similar losses, while in the drier, less populous West, short-grass prairies have fared better.
Government agencies and conservation groups, aided by volunteers, have undertaken numerous restoration projects across US and Canadian prairieland, some of them thousands of acres in scale. In recent years a cadre of private citizens has joined in, restoring prairie to their own properties, from city yards up to 100 acres or more around rural homes and farms. In some cases they’ve re-created prairie where it never was before — on land that was originally forest or wetlands before settlers plowed it for crops.