This is the standard mix we recommend for potting all indoor temperate plants, including Sarracenia, Dionaea, Drosera, and Pinguicula. The mix is no secret: just peat soil and perlite. This just keeps you from having to buy more than you need! Available in quart and gallon Ziploc bags. The quart bag contains enough soil to fill approximately three 3-inch pots, two 4-inch pots, or one 5-inch pot.