Cucumbers have been cultivated for centuries in India and China and were part of the diet of Greeks and Romans. They were introduced into the New World by 15th-century Spanish explorers who brought fruits to Haiti. Thomas Jefferson included “early long green cucumber” in his list of “objects for the garden” in 1794. Long Green Improved Cucumber was introduced in 1842. This is a popular cucumber for pickling and slicing, growing to 12 inches long and 3 inches in diameter. Flesh is crisp and very white.