2KG (4.45 lbs.) Bag. Our organic blend contains aragonite or coral calcium specifically made to help tomatoes grow and avoid 'blossom end rot'. Complete plant food helps establish microbial life in the soil, which breaks down organic matter and makes nutrients available to the plant. Covers 440 square feet of garden or 4 ounces per plant. Spread granulated mix into the top 4" of soil. Use at planting time and monthly afterward. Safe for children & pets.