Plant food for grapes - Organic 1.5 kg - DCMample harvests. DCM Plant food for grapes is organic nutrition that provides the nitrogen your grapevines need for good growth. It also contains phosphorus and potassium for a good harvest. The fertiliser provides nutrition for up to 100 days. The fertiliser uses Minigran technology. Each pellet contains high quality ingredients that result in uniform release of the nutrients. The small size of the granules results in better distribution. 0. 51 kg of