The Peach tree is a small deciduous tree native to China that bears a juicy fruit of the same name. Peach trees grow very well in a fairly limited range, since they have a chilling requirement that subtropical areas cannot satisfy, and they are not very cold-hardy. Peach trees should be located in full sun, and with good air flow. Cultivated peaches are divided into "freestone" and "clingstone" cultivars, depending on whether the flesh sticks to the stone or not; both kinds can have either white or yellow flesh. Peaches with white flesh typically are very sweet with little acidity, while yellow-fleshed peaches typically have an acidic tang coupled with sweetness, though this also varies greatly. Both colours often have some red on their skin. The nectarine is a Cultivar Group of peach that has a smooth, fuzzless skin. Though grocers treat fuzzy peaches and nectarines as different fruits, they belong to the same species.