Pistachio trees originally come from the Middle East, Persia (Iran), Syria, Turkey, and Greece where dry lands and desert climates are available. Pistachio trees have been cultivated for more than three thousands years. Persian high positioned desert regions with abundance of sunshine are ideal for growing pistachios. Some deserts located in the south of Iran such as in the Kerman province exceed two hundred thousands hectares with perfect soil for the growth of pistachio trees. Pistachio trees planted in orchards need approximately seven to ten years to reach maturity. Between Iranian people pistachios are known as “Green Gold” and are considered as an important commodity in both nutritional and economical forms. Pistachios occupy a special place in the heart of every Iranian.