A floating garden device for displaying and watering at least one living plant as the garden floats on a body of water. The device is composed of a buoyant body and at least one plant mounting recess attached to the buoyant body. The recess is comprised of a sidewall and a bottom. The bottom is positioned in a non-horizontal orientation, generally forming an angle between five degrees and forty-five degrees. The recess is located such that only a portion of the bottom is in fluid communication with the water, thus not submerging the entire bottom. The garden device may have at least one fluid passageway extending through the mounting recess bottom such that the water may fill the submerged portion of the mounting recess, or it may have a wicking device attached to the recess bottom such that the wicking device extends into the water.

A floatable plant cultivation system that comprises a plurality of buoyant bases secured together and float on a water surface. One or more of the bases includes means for supporting one or more plants. The bases have side edges that abut one another and are secured together. In a preferred embodiment, the bases are rectangular mats fabricated from a closed-cell foam plastic material. Each of the bases has at least one side edge wherein a plurality of indentations are spaced apart along the side edge forming a plurality of protrusions and each indentation is positioned between consecutively spaced protrusions. The side edges of respective bases are joined together such that the protrusions on one base are positioned in mating relationship with the indentations of another base. In addition, or alternatively, the bases can be secured together by clips.