Abstract: A harvested tree reservoir made from a durable and impermeable material that mounts on the trunk of a harvested tree by inserting the cut end of the harvested tree trunk therein and engaging one or more sealing devices around the circumference of the tree trunk to create a water-tight or spill-resistant seal. The reservoir may then be filled with liquid through one or more ports located on the sides or bottom of the reservoir, with one or more ports having a connector hose. When the reservoir is filled, the tree may be transported, stored, and displayed with minimal spillage of the contents of the reservoir. Additionally, the reservoir may be re-filled, from time to time, through the ports. The reservoir may also be connected, via the connector hose, to one or more other reservoirs to allow for contemporaneous filling or refilling of a plurality of reservoirs in a series.