Micropropagation is an indispensible tool in plant recovery work, especially in the case of immature seeds, extremely rare taxa, or unhealthy plant stock. In vitro storage is considered a medium term storage method and high maintenance, but is capable of growing living plant tissue under a disease-free, environmentally controlled environment. Furthermore, it allows for the rapid increase in numbers of plants and the storage of a large number of living plant cultures in a small space. In vitro grown plants generally require an acclimatization "transition" stage before they can be grown normally under greenhouse and out door conditions.
