When the plants have leaves of one to three centimeters length, the plants can be removed from the bottle, cleaned under flowing water and transferred to pots or beds with a sand/lime mix. The humidity should be kept high by covering them with a glass pane. Some of the orchids won't survive the transfer from the sterile bottle, but the strongest will. A healthy selection is important for all plants.
Later they can be transferred into a natural biotope with an intact plant sociology. Only the best plants may be able to adapt themselves and develop blossoms and seeds. So the bottle culture can be a useful tool to preserve these rare plants.