Turns Hydrangeas blue, lowers the pH of soils and allows acid loving plants to achieve optimum growth. Long lasting, high effective safe and non-toxic. Comprised of 100% natural and organic ingredients, these products are pure plant food with no fillers or sludge. They enrich your garden with the best the earth has to offer. Approved for organic gardening. Hard to find products for the avid and environmentally conscious gardener.