A plant cultivation supporting apparatus (1) for supporting cultivation of a plant in accordance with evaluation of a state of the plant is disclosed. The plant cultivation supporting apparatus includes an evaluation unit (121) configured to obtain distance data that indicates a distance from a predetermined position to at least one point of the plant and derive a water stress evaluated value of the plant based on the distance data, the water stress evaluated value indicating a degree of water shortage in the plant and a control unit (122) configured to determine, based on the water stress evaluated value, control to be applied to the plant and generate a control signal to be used for the control.
