Canna Nutrients COGr Vega BCANNA COGr Vega is the nutrient that is specially intended to be used when growing in CANNA COGr Boards during the growing stage of the plant. This ensures healthy and strong plants that produce long, vigorous growth shoots. Canna Nutrients COGr Vega is a professional nutrient for plants containing all the essential elements for optimal growing. COGr in combination with COGr growing medium is the nutrient for the experienced and demanding grower.