Experts and BHG readers answer.
How much topsoil would I need for 3-6 inch depth of dirt?
I'm going to try a garden without digging. It says to put down 3-6 inches of half topsoil and half compost manure. How would I find out how many bags of each I would need to equal that depth of soil?
This answer requires a little math and making some assumptions of the size of bags that you'll use. Most large soil/compost bags contain 2 cubic feet of material. The 3 to 6 inch depth that you mention means that you're adding the material to the depth of 1/4 foot (3 inches) to 1/2 foot (6 inches). So over 1 square foot of ground you'd use 1/4 to 1/2 cubic feet of the material. Multiply that out by how many square feet of area the garden covers to find how many cubic feet of material are needed.