PROBLEM TO BE SOLVED: To provide a heating device for plant cultivation which is capable of efficiently equalizing the soil bed temperature by conducting heat generated in a heating part effectively into a soil bed when heating a cultivation region of plants with a heating element, and for which energy saving, such as keeping a maintenance cost as low as possible, is taken in consideration, and a cultivation container including the heating device.SOLUTION: A heating device comprises: a plate-shaped heating part 2 with a built-in heating element installed underground; and heat transfer parts 4 which are connected to the heating part, formed in a rod-shape, and arranged in a cultivation region in a distributed or developed manner, in which the heat transfer parts are provided outward in a protruded manner from a flat surface of the heating part and have a length such that the heat transfer parts do not protrude from a soil surface.SELECTED DRAWING: Figure 1
