Awhile back I bought a nepenthes from lowes to get my collection started. I did some research on neps, but I didn't read anything about acclimating them, so the first thing I did was take it out of the dome. Within two weeks the pitchers started to turn black. I put a plastic bag over it and let it get back to normal before I started cutting holes in it. Its been about a month or so since I started acclimating it and it looks like it might produce pitchers in the next month!
It seems to have two or three growth points. Have you ever had a plant that does this?