Bar Harbor Blend Organic Potting SoilBar Harbor Blend Organic Potting Soil Uses: House plants, hanging baskets, window boxes, container gardens Also terrific for growing vegetables! Coast of Maine Organic Products Bar Harbor Blend Organic Potting Soil is a lightweight soil mixture made with salmon, blueberry, lobster and other composts, as well as calcium and chitin rich lobster shells, sphagnum peat, perlite and kelp meal. It is dark brown in color and provides the perfect balance