Comparison: Best Stonington Blend Soil (Updated | Nov 11th)

Choose the pack size based on the volume of containers you plan to fill; a 1.5 cu ft bag covers roughly one large 15‑gal pot. If you have several containers or a raised‑bed garden, buying a larger multi‑pack (4, 6 or 8 bags) reduces per‑bag cost and ensures consistent soil throughout. Smaller packs are convenient for occasional projects or trial runs.

Stonington Blend combines oceanic amendments such as lobster and crab shell meal, kelp, fish bone, and mycorrhizal fungi, which supply slow‑release nutrients and boost root symbiosis. Generic mixes often rely on peat and perlite alone, lacking these natural mineral sources and biological inoculants. The blend’s balanced texture also improves drainage while retaining moisture for healthier plant growth.

Both blends use premium organic ingredients, but Stonington Blend emphasizes oceanic minerals and mycorrhizae for container gardening, while Bar Harbor Blend is formulated as an all‑purpose soil for vegetables, herbs, and indoor plants. Bar Harbor includes sphagnum peat and compost for a softer texture, whereas Stonington’s coir‑peat‑perlite mix offers a slightly firmer structure ideal for larger pots. Choose Stonington for high‑performance container crops and Bar Harbor for versatile indoor/outdoor beds.

Yes, the blend’s sterile, organic composition is safe for indoor use and provides excellent aeration and moisture control. The mycorrhizal fungi help indoor roots explore the limited soil volume more efficiently. Just ensure containers have proper drainage to avoid waterlogging.

The granular fertilizer adds a balanced N‑P‑K ratio (5‑2‑4) that promotes leafy growth, budding, and fruiting, complementing the nutrient‑rich soil blend. Its lobster, crab, fish, and kelp meals supply calcium and micronutrients, enhancing plant vigor and disease resistance. Apply as a top‑dress or mix into new beds for a sustained, organic boost.

Buying in bulk (e.g., 6‑ or 8‑bag packs) lowers the cost per cubic foot and reduces packaging waste. Larger orders also ensure you have a consistent soil mix for an entire season, eliminating the need to purchase additional bags later. For gardeners with multiple containers or raised beds, the savings can be significant.

Michigan Peat provides a basic peat‑perlite‑sand blend focused on moisture retention and general soil improvement, but it lacks the specialized oceanic nutrients and mycorrhizae found in Stonington Blend. Stonington’s added mineral meals and biological inoculants deliver higher fertility for demanding crops, especially in containers. If you need a simple amendment for lawn or garden beds, Michigan Peat works; for premium container performance, Stonington is superior.

Yes, the Stonington Blend soil and the 4 lb plant food are both OMRI listed, meaning they meet the standards for organic production. Their ingredients—lobster and crab shell meal, kelp, fish bone, and worm castings—are all natural and approved for organic use. This certification gives confidence to gardeners who maintain organic certification for their crops.