[Problem] The purpose of the present invention is to provide a computer system, a plant diagnosis method, and a program that analyze, from image analysis and a plurality of data resources, the correlation between possible prediction results and make predictions having higher accuracy than simple analysis of images. [Solution] A computer system for diagnosing a plant acquires a plant image of the plant, analyzes the acquired plant image, acquires non-image information pertaining to the plant, analyzes the acquired non-image information, analyzes the correlation between the results of the analysis of the image and the results of the analysis of the information, and diagnoses the plant on the basis of the results of the analyzed correlation.