Coast of Maine Organic Products Penobscot Blend Compost & Peat is a rich, smooth, all-in-one planting mix made from salmon and blueberry compost, tiny mussel shell fragments and peat. Mixed with native soil, it helps aerate and add texture and promotes better root growth. When used around new plantings, it provides the nutrients and microorganisms needed for a strong start.  Also terrific for growing vegetables!  Available in 1 cu.ft. bags.