One of my Sarracenia plants has grown quite aggressively to the point where the crown looks like a 'jenga tower' and is twice the size of the neighbour it is sharing its pot with. It has also what appears to be a flower when it is autumn right now? I unfortunately couldn't take a photo of the flower but it looks like a small green ball in the centre of the crown.
Is it because it was overfed? Can you induce this kind of growth if a Sarracenia is fed enough? I ended up feeding it one big fly and a dead wasp a few months prior to this by accident. I was trying to feed both plants. At this point in time it has caught quite a lot on its own.