Thanks again, everyone.
Well, a pitcher has just opened on one of my nepenthes. Very small, about an inch long, rosy throat--I *guess* it is mature (?).
Do I feed this? Or does it open before it is ready to go and I should let it be? It doesn't seem to be dripping with nectar or anything. Can I toss in a little damp tubifex with a tweezers and wiggle it, or wait?