Venus flytraps can be moderately easy to grow if certain conditions are met and maintained. As venus fly traps grow they develop long root systems, if the plant is healthy, so a tall pot should be used with older plants.
Some believe that a venus fly trap needs to be grown in a pot covered in plastic or glass, as is commonly seen in nurseries.
The truth is that this will lead to overheating and shriveling, caused by that type of covering, resulting in poor, weak, and spindly growth. Plants sold in nurseries are often planted in too small of a pot and in the wrong soil type.
Typically, you should re-pot your venus fly trap into the correct soil and a 4 or 5-inch pot. Many beginning growers will overreact to a venus fly trap losing one of its traps.
However, this is normal. The trap is the plant's leaf and periodically the plant will lose a leaf. If you are growing your venus fly trap in an area where it does not have access to a natural diet, such as a terrarium, you may give it one or two flies or the pet store/caught crickets every month. You should not play with the traps (causing the trap to close with your finger), as this drains the plant's energy.
If you play with a trap several times it will become less sensitive and probably die. Although, this does not hurt the entire plant. If a leaf dies you should always cut off the dead growth. Maintaining the plant, so the fungus does not begin to grow on the dead leaves.
Light - Light should be of full sun quality and brightness.
Soil - Sphagnum or peat moss usually makes the best soil. These can also be mixed with a little silica sand and/or orchid bark. Some growers add charcoal to remove salts that are present.
Humidity - The Venus Fly Trap doesn't require extremely high humidity but above 50%.
Temperature - Can range from 70° - 95° F (21° - 35° C) and down to 40° F (5° C) in the winter.
Water - Rain water or distilled water is preferred. Keep the plant damp, but not soaking. Many growers keep a pan beneath the pot with about an inch of water in it to keep the humidity around the plant high and to keep the plant constantly moist.