- Tue Jun 16, 2020 4:28 am
It's helpful to know that the traps and leaves will turn black under normal care, too. That's just the nature of these plants. (Repotted box-store plants also need time to recover from soil/light/water trauma, and can look awful in the process.)
Traps can die off after ingesting a bug that was too big or indigestible for other reasons (non-insect meat), or after repeated successful meals, or injury.
Leaves will die off, too. General recommendation is to leave them in place until they are completely withered and crispy dry -- like a stiff little bristle. When they've reached that stage, those crispy stems will just snap off with no effort. If you have to tug then the leaf isn't ready to go.
On larger plants that have plenty of photosynthesis happening, I have snipped all-black traps off healthy leaves, to keep the plant pretty.