Fig. 13. Hedgerows of trees and shrubs were used to separate farms and fields, especially prior to the availability of wire fencing. Osage orange (Maclura pomifera(Raf.) Schneid.) was often planted in hedgerows. Hedgerows provide unplowed ground that has minimal exposure to incorporated corn insecticides, and hedgerows often provide nesting habitat and pollen sources for bees. The removal of hedgerows decreases habitat diversity.