Venus flytraps soil is very good at retaining water. The media (soil) will soak up water from a tray or bowl almost like a sponge. When plants are in lots of direct sunlight and the weather is warm, the tray method works well.
Never allow the soil to dry out completely. The flytrap requires mineral-free water. So bottled distilled water, water passed through a reverse-osmosis unit or collected rain water are best. If you grow your plant in a pond or fountain, keep the water level no higher than halfway up the pot.
The Venus flytrap gets some of its nutrients from the soil, but to supplement its diet, the plant eats insects and arachnids. Ants, beetles, grasshoppers, flying insects, and spiders are all victims of the flytrap. It can take a Venus flytrap three to five days to digest an organism, and it may go months between meals.