Hello bob123how,

Those are the classic signs of a plant trying to get used to a new environment. Something is just a bit differnt in the environment it is in now and the plant needs time to adjust. It sounds like you are giving them enough light, especially if the others are producing pitchers. N. ventrata is a very tough plant that can adapt to a wide range of conditions, it just needs time to do so. If it was recently moved around, it might have taken offense at the change in positions. So long as nothing toxic to the plant was sprayed on the leaves, like copper based products or too much fertilizer, it is fine. Give it a few weeks and keep up the good care.

One of the interesting things about ventrata to me is that two sets of ventrata from different sources can behave differently for Long periods of time. Ok, that was next to confusing. I have 4+ ventrata right now (I've got some cuttings in the works thus the +) and they came from 3 differnt sources. 2 of them took 6 months to actually pitcher the first time for me. The other two started and wouldn't stop from about day one. There are obviously lots of factors that can get in the way... what did they pot them in origionally, have they been fertillizing them with something they shouldn't before I got them, stuff like that. Six months though is a long time. Finally the plants seemed to aclimate and now they're making nice big pitchers. I advise patience.

If you have a nep that typically should be responding to the same to the conditions as your other neps and the leaves aren't all dieing on you... just be patient.

Here is a link that might be useful: Aracknight's Deadly Delights