[header] How to fertilize carnivorous plants [title] Place your carnivorous plants in soil that lacks nutrients. [step] Since carnivorous plants rely on insects as their main food source, these plants thrive best in specific types of soil. [substeps] Use horticultural sand or sphagnum peat moss as the soil for your carnivorous plants. 
[title] Supply your plant with water that does not contain nutrients. [step] Carnivorous plants thrive best in conditions that lack nutrients, and the minerals commonly found in most water types can over-fertilize your plant.