Very interesting! I want to grow more highlanders, but I have been afraid to spend the money on a plant I may not be able to grow. Since it may take generation to addapt a plant to the warmer conditions.
There are cases of acclimatization of plants from one kind of environment to another. In the case of Nepenthes, i have yet to see a bicalcarata growing outdoors in temperate climate or a villosa growing well in Florida.
There is a limit to adjusting a particular plant to an environment very different to its original one.
I have seen cases of pseudo acclimatization (fake acclimatization) where the grower manages to keep the plant alive in hostile environments but it eventually dies anyway.
Again, as i have said it many times before. What's the point to keep a Nep alive if it won't produce pitchers. there is a big difference between surviving and thriving and my guess is that most of us wants our plants to thrive and not just survive.
I agree with you agustinfranco that's why I renounced to grow lowlanders: My all year round climate is too cool for them.
An exemple: I had a N. ampullaria well, it started pitchering in July and it stopped in the middle of September, too few for a nice looking plant. My Highlanders start pitchering at the beginning of March and they stop at the end of November.
Of course there are exceptions like a N. rafflesiana, a N. mirabilis and a N. truncata they do pitcher very well in my conditions.
Milan - ITALY
Well, I am not talking about just keeping it survivine without pitchering. Heck I am against keeping a human alive if they are just surviving and not thriving. I do believe though that with selective breeding and study the plant can addapt to more drastic condition than we give them credit for. Like I said it may take several generations to do it, but it can be done. I had just hoped it coule be done in one, but I ralize that is a long shot.
IIRC, N. villosa can take higher temps when younger but not when older. OR it could be visca versa but I know I read it somewhere.