 In the 12th century, the area was described as being "unproductive of cereals, especially of corn".During the 12th to 14th centuries, the main crops were barley, oats and rye, with wheat also being frequently grown.In the 15th and 16th centuries, barley and oats were grown across the county, with rye being largely concentrated in the south; wheat was also grown in some areas, although much of the land was unsuitable.