So what did you do wrong. ItÂs hard to guess what you did. We already replied to one member regarding his neps & as you have read have made a description how he is growing them. We have to ask some more detail so we can resolve his problem.

So there are many causes that can cause a nep to stop pitchering. From low light to low humidity.

SoÂ

How long has it been that it stopped pitchering?

WhatÂs the temperature where you keep your nep?

Did you move it?

What type of water are you using?

Have you repotted it? If so, what type of soil are you using?

How much & how many hours of light are you giving it?

And, is anything else wrong with the plant beside it stopped pitchering?

For the most I can say now is that because you live in a country that suffers very cold winter. It could be it got exposed to cold temperatures, neps will stop pitchering if it gets too cold. CanÂt say low humidity has to do with anything since I have my own N. ventricosa pitchering, including my N. x ÂVentrataÂ, N. truncata, N. alata, N. x ÂJudith Finn at humidity low then 10%.

It could just be the temp / weather / time of year ~ If the plant is other wise healthy...

From "my" experience with them, my plants wont pitcher this time of year, but will go nuts once it warms up in the spring...

If that's the case it should be fine & start pitchering again once the weather warms up...
But like hunterkiller03 said, it could be many other things...

Probably the most typical reason would be insufficient hours of daylight it receives. These are essentially equatorial plants, so they get 11-13 hours of daylight a day. When it goes below that they stop pitchering. But the othere stressors alluded to above are also valid reasons.