Abstract: A conserving device for plants includes a receptacle, a support member formed of two retaining elements of which at least the first one is provided with fasteners enabling it to be fixed in a detachable and/or movable manner to the receptacle, and fixing elements which are provided for connecting the second retaining element, in a detachable and/or movable manner, to the receptacle or to the first retaining element as well as tightening elements which submit both retaining elements to forces for bringing them mutually together in such a manner that the trunk of the plant disposed between the two retaining elements is tightened in a manner adapted to its diameter.