The Guide to Oklahoma Wildflowers

With its Rocky Mountain foothills, hardwood forests, many rivers and streams, low mountains, sand dunes, cypress swamps, and wide swaths of rangeland and pastureland, the Great Plains state of Oklahoma is one of only four with more than ten ecoregions. Tallgrass, mixed-grass, and shortgrass prairies are native to large areas; rainfall and temperature are quite variable; and elevations drop from 5,000 to 300 feet. This diversity ensures that Oklahoma is host to hundreds of species of wildflowers,