PROBLEM TO BE SOLVED: To provide a growth management device, a growth management method, and a program, in which the state of a greenhouse in the case where a control device is operated is predicted.SOLUTION: A growth management device comprises: a performance information acquiring part 210 which acquires performance information expressing performance that a control device installed in a greenhouse for raising field crop can exert in the greenhouse； a sensor information acquiring part (sensor monitoring data receiving part 201) which acquires sensor information detected by a sensor installed in the greenhouse； and a prediction part 211 which predicts the state of the greenhouse in the case where the control device is operated based on at least the performance information and the sensor information.SELECTED DRAWING: Figure 2
