Abstract: An assembly for holding and removably mounting a live seedling plant, preferably a containerized seedling, on either a live or an artificial tree, such as a Christmas Tree or the like, in combination with an additional decorating structure of the type typically associated with a Christmas Tree or seasonal ornamentation. The assembly includes an elongated compartment of sufficient longitudinal dimension to maintain growth media therein and thereby allow the root system of the seedling to grow in a preferred vertically downward and elongated configuration of sufficient length to facilitate growth of the seedling. The live plant is thereby combined in a decorative manner with a live or an artifical tree structure and can readily be removed therefrom after the live or artificial tree has been used.