Blackberries, peaches, apples, watermelon, cantaloupe, pears, plums, grapes, cherries, pawpaws and persimmons. Examples include beach plums, American persimmons, pawpaws, Pacific crabapples, and prickly pears. This fertile area also grows bananas, citrus fruits, pawpaws, breadfruit and coconuts. The dorminant crops found there include fruits like Mangoes, melons, pawpaws and passion fruits. Varieties include peaches, apples, figs, pecans, pawpaws, serviceberries and more. In the past the main crops were onions, chilies, watermelons, pawpaws and cotton. The park lies in a "moist Appalachian" environment, dominated by maples, pawpaws and tulip poplars. The Lewis and Clark Expedition sometimes subsisted on pawpaws during their travels. The disagreeable-smelling leaves, twigs, and bark of pawpaws contain natural insecticides known as acetogenins. The district was well known for its pawpaws. Pawpaws are shrubs or small trees to tall. The Lewis and Clark Expedition consumed pawpaws during their travels. Pawpaws may also be blended into ice cream or included in pancakes. Although shade-tolerant, pawpaws do not persist in undisturbed old growth forest. Pawpaws are native to 26 states of the U.S. and to Ontario in Canada.