Approximately 1lb (1/2 gallon bag) The most common mixture is 1 part peat, 1 part perlite. This works well for Drosera, Venus flytraps, and Sarracenia. OR Approximately 1lb (1/2 gallon bag) 2 parts perlite, 1 part peat for plants which would like a faster draining media like Pinguicula, Cephalotus, and Heliamphora. OR Approximately 1lb (3/4 gallon bag) 1 part long fiber sphagnum, 1 part perlite for potting media that works well for a wide range of Nepenthes. Check out our media separates for individual bags of media to mix your own! Peat, perlite, and coconut husk chips available!