Early American Agriculture PLANT INTRODUCTION has played a significant role in the growth of American agriculture. It has wrought tremendous changes in the American landscape, and has added many new food elements to our diet. As the dean of American plant explorers, Dr. David G. Fairchild, once wrote: "The era of pork and hominy has passed for- ever in this country, but so short a time ago that our fathers refer to it as the time of plain living." The importation of new agricultural plants has been a constant necessity in America, from the first attempt of the Europeans to settle here until the present day. Although the colonies teemed with plant life, the Indians cultivated few crops in comparison with the wealth of plant life which the immigrants brought with them. Even today it is estimated that we have in America only a fourth of the plant resources of Europe and not more than a tenth of those in Asia. This enormous reserve of plant life is a challenge to those who hold that the diminishing food supply of the world, in face of an increasing population, is a threat to our survival. A list of the fruits, vegetables, and small grains brought to this country from the Old World would include most of our familiar market and garden varieties.1 Henry A. Wallace, as Secretary of Agriculture, said that of our seventy-eight leading crops in 1937, only about ten were native to the United States. Maize, or corn, and the "Irish" potato are probably the outstanding contributions of the Indians to American agriculture. The Indians used many SThe fruits include apple, pear, quince, loquat, peach, certain plums, apricot, orange, grapefruit, lemon, lime, kumquat, fig, olive, pomegranate, mango, pineapple, date, European grapes, currant, and the more important mulberries. The vegetable crops would include onions, lettuce, cabbage, asparagus, eggplant, muskmelon, water- melon, cucumber, okra, beets, Brussels sprouts, carrots, cauliflower, celery, kale, collard, kohlrabi, leek, parsley, parsnip, peas, radish, salsify, spinach, and turnips.