The present disclosure is directed to collecting and evaluating plant growth data and to making estimates from the plant growth data. Estimates that may be made from the plant growth data identify a total volume or mass of plant matter that is projected to be yielded from cannabis plants growing at one or more farms. Estimates made by methods and apparatus consistent with the present disclosure may identify a mass or volume of cannabis concentrates that could be created by an extraction process that extracts cannabinoids from an volume of cannabis plant matter. Methods and apparatus consistent with the present disclosure may also allow a computer of a manufacturer to receive data from either a grower computer or from a computer of an extractor such that a manufacturer can arrange to purchase cannabinoid containing extracts that may be incorporated into products that may be consumed or used by a person.