What is this blend made of? It is a rich blend of compost, lobster, kelp & fish bone meals, worm castings, and mycorrhizae. Where does Coast of Maine manufacture their products? The United States. What is the main nutrient provided to the plants through this mix? Natural slow-release nitrogen. Check out our soils and composts! Penobscot Blend Add to Cart Aeration Formula Add to Cart Bar Harbor Blend Add to Cart Cobscook Blend Add to Cart Customer Reviews 4.0 out of 5 stars 29 4.1 out of 5 stars 8 4.5 out of 5 stars 97 4.5 out of 5 stars 2 Price $12.99$12.99 $35.83$35.83 $20.46$20.46 $13.99$13.99 Certified Organic? ✔ ✔ ✔ ✔ Purpose For planting shrubs and trees Base mix to create custom soil Repotting & potting containers Use with acid loving plants Sizes available 1 cubic foot 1.5 cubic feet 8 quart, 15 quart, 1CF, 2CF 1 cubic foot, 2 cubic feet Made in the USA? ✔ ✔ ✔ ✔ Main Ingredients Compost, shells, mycorrhizae Lobster meal & kelp meal Bark compost, peat, perlite Peat, bark, salmon compost