Be careful with that question. It is a bit misleading. Venus Fly traps actually can’t be planted in standard potting soil. They need nutrient poor, acidic media to survive. The most widely used media for Venus Fly Traps is a 1:1 combination of peat moss and perlite. For more information read the topic on soil for venus fly traps.
Be sure to check out the FlytrapStore Venus Fly Trap Soil as well, if you’re looking to purchase some pre-made soil for your pet Venus Flytrap.