There are three essential products that can be derivative of hemp, and that have a large importance for the economy, according to the region of cultivation and the variety of the plat utilized: the fiber, the seeds and the resin.

As we know, the cannabis sativa is most long cultivated plant by man for the extraction of vegetable fibers. The fibers are removed from the pericycle of the stalk of the plant of hemp, they are very durable and resistant, and are considered the main product from this kind of cultivation. The fibers of a hemp plant can achieve 4m high, especially the male plants, and can be composed by 70% of cellulose, constituting a very rich material for the industry of papers and tissues.

The seeds, on its way, are destined most for the fabrication of oils, beauty products, bird feed and, of course, for the plantation. Even if utilized especially for the production of eatable oils and cosmetics, the production of bio-diesel is possible with the seeds.

The third element is the resin, which pulls out by the epidermal glands and can achieve until 20% of the weight of the hemp plant. It is concentrated on the highest part of the plant, especially on the leaves surfaces, and has the function of climatic adaptation of the plant. In addition to its psycho actives proprieties, the resin, the most polemic product of cannabis, presents very important medical characteristics, especially the cannabinoids.

The actual situation of the cultivation of hemp in the world is reduce since the Geneva Convention in 1924, when this plant has been by the first time presented as one of the cataloged drugs. In this time, the use of cannabis in Europe, in countries like Spain, was destined to scientific, therapeutic and medical purposes, besides the production of fibers; there was many substances cataloged with pharmacological purposes that were derived from cannabis.

After the thirties, the campaign anti-cannabis managed by the American industrial, especially the petrol industry has started. After that, a marginalization of the consume of this plant, based on cultural prejudices, considering that its consummation was associated with the Latin and Asian immigrants, and the prohibition of the simple existence of cannabis sativa in the United States territory and its colonies, as well as its cultivation, possession, acquisition and commercialization.

The prohibition of the existence of this plant exist it has almost eighty years after the start of the American cannabis phobia and in third world countries. The prohibition of every part of this plant, besides the psycho actives, is justified by the difficulty of distinguishing the plants with hallucinogen proprieties and the ones who serve exclusively for the extraction of fiber. In some countries of Europe, however, the cultivation of hemp is utilized for the production of tissues and paper with the fibers.