Trap question



First I have two flytrap in my bedroom.I don't know why all the trap are very small and turning black. Sometime it not open.Can you guy tell me why?
Hi Mac.
The traps will turn black after a few months and they are replaced by new traps being grown. If it's happening all at once, make sure they are sitting in a saucer full of distilled or rainwater only, they are on a sunny windowsill and you are not near an air conditioning unit.
I think your question would be better ansered if you gave us more specifit details like where how mush water sunlight wind temps humidity and how long youve had it