Please note that the fridge does not cause or create the dormancy!
it simply maintains the dormancy that was already started naturally by keeping the plants outdoors all season..the plants need to be already dormant before they go in the fridge.
In my opinion, VFT's and Sarracenia should never
be grown indoors or especially in terrariums..
the climate inside a terrarium is just all-wrong for them..
the climate is fine for a few months...but VFTs and Sarrs need very different climates at different times of year..
Keeping VFTs and Sarrs in a terrarum is the same as trying to grow maple tree bonsai in a terrarium..
you can replicate June - August ok in a terrarium..sunny and warm..but what about the other 9 months of the year?
Maple trees need a gradually warming spring to come out of dormancy, a gradually warmer and sunnier summer, a gradually cooler and darker autumn, then a cold and dark winter to be fully dormant.
so do VFTs and Sarracenia.
its not an option..its a necessity.
If you grow a maple tree indoors it will die within a year...the non-changing environment of a terrarium will also eventually kill a VFT.
VFTs need it warm and REALLY sunny in the summer..DIRECT sunlight..
where can you find that? outdoors in the summer!
Nature provides the perfect light for free..
then you need gradually decreasing photoperiod and gradually decreasing temps from summer into autumn..
where can you find that? outdoors..again nature does all the work for us.
The only tricky season for those of us in the Northern states is the winter..Spring, Summer and Autumn are a breeze..just keep the plants outdoors April - October.
but the plants need a COOL winter..the winter of South Carolina..
but winters in the northern states are too severe and will kill them if the plants are left outdoors..
If you have a cool basement or attic, or a garage that stays in the 40's (4-10C) all winter, thats fine
for dormancy..or ideally, if you live in the southern US where winters are mild, just leave your plants outside 24/7/365! but right now I lack any of those conditions..hence, they are going in the fridge!