HappyDaze Azolla-Duckweed Worm Casting 5 Gallon
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The Azola-Duckweed worm casting 5 gallon bag is good for big growning areas. I recommend 1 cup per gallon container for poting soil, 1 cubic foot of potting soil will need 7 cups of Casting. Or 1/2 inch worked into your surface area to be planted,will cover 16 square feet.