Arghh, my plant is dying! What am I doing wrong?
Well, that could be one of many things.
The most likely answer however, is inadequate lighting. Venus fltraps require huge amounts of light and if your plant isn’t getting it then it will likely die. Full, bright sun all day long is the best solution to keep Venus flytraps healthy. With good lighting they can survive without being fed, minimal water, poor’ish soil conditions and lots of other nasty problems which afflict them. But if you keep your plant inside or live somewhere which is regularly overcast then you will likely have trouble keeping your plant healthy.
Remember that just because a few of your traps have turned black that doesn’t mean your plant is dying! Those traps will probably grow back nice and healthy in a few weeks anway.
Also, if you don’t know about winter dormancy, then go visit the winter dormancy post.