Well. I'm in Canada, I wanted highlands, and ultra highlands, but I thought it would be impractical, so I thought, as long as I can keep lowlands warm andhumid, i can do that. Almost all of them grew too big for me... I wanted highlands... Then it dawned on me. Duh... I live in the PERFECT place fo highlands... All but the summer monthes, I hardly have to provide any cooling myself... The weather does that for me!!! Well. I've decided to delve into the realm of highlands. Using a humidifier in my bedroom, on and off, just to keep it at an acceptable level, not too much more... I only keep the hardest ones in a tank (uh, will - not do, I'm working on it, ok?). NOW, I want some of those lowlands.
Basically, what I'm saying is no matter what kind of plant's climate you live in, you'll want the opposite...
I say go for some of the really nice rafflesiana variations... The singapore giant, nivea is nice too. Imagine a massive bicalcarata outside on your patio, climbing a trellis you built for it, or even the ever so rare clipeata, right outside your window...
I say stick with the lowlands, and If you can get a ten or twenty gallon glass tank (if u buy a fish tank without all the filters, and stuf, just as a glass box, its REALLY cheap...), that you can cool sufficently at night with say, some ice, you can have a small collection of highlands too...
Sorry. Thats not an answer to your question... Here is a thread that is all about
ultrahighlands in the greenhouse forum...