In Cuba, the process of tobacco growing is the result of age old expertise handed down to generations. Tobacco plants are very delicate and need skilful handling. There two types: Corojo, grown in green houses, which has the finest leaves, selected as the cigar´s wrapper, and Criollo, which grows outdoors and provides the cigar´s filler and its binder. Harvesting tobacco is a laborious operation. The leaves are tied in bunches and put to dry in sheds hanging on horizontal poles. Humidification is a hydrating process carried out after the drying so that the leaves do not dry out.