May I break in with a related question?
When you mention overwatering, what is considered too much?
I was looking online and it seems that Cephs have almost the same seasonal temp variation as our VFT (except in opposite months due to the southern hemisphere). Has anyone tried growing them like that, allowing it to go dormant in winter? Perhaps that would extend their lives?
Dormancy is not strictly necessary for this plant and growth can be maintained all year round at daytime temperatures of 68F and above.
I read that site last night, it's partly responsible for getting me to think about this actually.
I still want to know if more Cephs are living longer than a couple years when kept outdoors exposed to year round light & temp variations compared to plants kept in a terrarium. Even a Ceph in a greenhouse would be getting some seasonal variation.
I have grown Cephalotus under both conditions over the years; and I've had most plants for far more than a decade -- with no discernible differences. While they don't undergo any formal dormancy (keep in mind, after all, that they are considered subtropical plants and evergreen) like that seen with Sarracenia, there is a seasonal slowing of growth; but the flat "vegetative" leaves are constantly produced during the winter.
In my opinion, it is neither an issue of indoor/outdoor cultivation or length of photo-period that leads to failure with Cephalotus; rather, it is more of a problem of keeping the plants under all-too-common stifling conditions -- thereby encouraging disease.
Simply research the climate of Southwestern Australia; these plants are native to a meso-Mediterranean climate, not the wilds of Borneo . . .