What is oldest farm in minnesota?

The oldest farm in Minnesota is the Oliver H. Kelley Homestead, also known as the Kelley Farm, located in Elk River. The farm was established in 1850 by Oliver Hudson Kelley, a farmer and founder of the Grange, the first national organization of farmers in the United States. The Kelley Farm served as a model farm for promoting agricultural education and innovation. Today, the farm is a historic site and museum, where visitors can learn about the history of farming in Minnesota and explore the restored farmhouse, barn, and outbuildings.