Chempak Soluble Plant Foods are formulated to meet those exacting standards of the professional grower and top horticultural exhibitor. They are fully soluble which means they start to work instantly and are ideal for the professional and everyday gardener alike wanting to get the best results from their garden. All Chempak Soluble Plant Foods contain seven essential trace elements, far more than ordinary soluble fertiliser. These trace elements are all absolutely necessary for healthy plant growth