Where do pistachio grow?
Pistachio nut is simply the pista, which is usually used as dry nut in foods like icecreams, puddings, shakes etc. It is grown in countries like California,Iran etc.
Pistachios are small trees that grow in the mountains of Iran, Turkmenistan, Turkey and western Afghanistan. They produce greenish colored nuts that grow in a tan colored shell. The word pistachio may refer to the nut as well as the tree itself. for more information, you can look here: http://en.wikipedia.org/wiki/Pistachio