Hortus is Latin for "garden", and the first gardens were planted about 10,000 years ago in what is often called the Fertile Crescent—the crescent-shaped area stretching from Israel north through Syria and down Iraq's two great rivers to the Persian Gulf. Probably more fertile in previous centuries than it is today, it was the original home of such food plants as wheat, barley, peas, and lentils or their ancient ancestors (not to mention the ancestors of cows, pigs, sheep, and goats as well). Many horticulturists today work as researchers or plant breeders or tend orchards and greenhouses—but most American households contain at least one amateur horticulturist.