Production of crude drugs :
Cultivation of Medicinal plants
Collection of wild plant for medicinal use
has several disadvantages
Continuous collection may lead to serious
defeciency
wild plants are found in sparse
distribution over unlimited area
The difficulty in collecting these plants as
they are mostly growing in deserts or forests or
seas where the way is always difficult
Ignorance of collectors may lead to
Admixture of the desired plant with other plants
Collection of undesired organ of the desired plant
Collection of the desired plant at improper time
Insufficiency of wild plants to fulfill the need of the market
The difficult of transport when the
natural home is far from any ordinary
means of transportation
cultivation of Medicinal Plants
Advantages
Concentration of a large number in a small controlled areas
Give a good means of controlling purity of the drug
Controlling processes of collection , drying , preparation and storage which are carried out by trained workers
Controlling factors affecting drug activity as selection ,
mutation , hybridization and polyploidy and also
improvement of the drug owing to improved conditions of
soil , fertilizers , control of insects pests
Cultivation is essential in the case of drugs subjected to governmental control as opium
Cultivation of the drug near to pharmaceutical firm for the manufacture process , thus
preventing deterioration of the vegetable drugs by careless handling and lower the costs of
transportation
Disadvantages
The high cost of production due to high prices and cost of land
Cultivation modifies the morphological and
anatomical characters of the wild plant so that the
identification of the plant become difficult ad many
varieties are produced
Medicinal plants require a particular
environment not readily obtainable under
cultivation as cannabis requires tropical climate
for production of the narcotic resin
Loss of plants due to adverse weather
conditions such as rain , attack of fungi ,
insects and diseases