I know this is an old thread and I dont mean to Bump it since its pretty done and over already,
but ISU shoot me a PM if you'd like to know how I went about doing my vft's indoors all year round with no outside priming for dormancy, and so far I've managed for 2 winteres now to never lose a vft while in dormancy, and I used a minifridge for mine.
the real key though is if your going to do a fridge dormancy you have to air yourself on the drier side, fridges are really stagnant and its easy to lose it to rot.
its definitely doable to grow vft's inside all year round where its impossible to grow outside.
yes outside is ideal, but sometimes you gotta try some expirementation, and i've managed to have happy vft's with my approach both inside and outside
just shoot me a PM