Humidity and Temperature

There is a wide range of opinions on humidity from what I have found. Highland and intermediate nepenthes are more forgiving than lowland nepenthes. For the most part highland and intermediates can be conditioned to live just fine in lower humidities. If you have a plant that requires higher humidity you can use terrariums.


Highland/Intermediate:
In order to condition or "harden" your nepenthes to lower humidity you simply need to put a plastic bag around the entire plant and tie the top in a knot. After about half a week to a week depending on you local humidity and how much conditioning you need to do you can begin to gradually open the bag every 3-4 days until the bag has been removed. This is to allow the plant to gradually get accustomed to your local humidity. It is important to not leave your plant in full sun while it is fully bagged as the bag will cause the plant to become overheated. So it becomes a little tricky when you first bag the plant. You need to make sure it gets enough diffuse light without getting too much direct light so the bag doesn't end up taking the role of an oven.

Highlands and Intermediates generally require a night temperature drop. It's hard to give specific temperature advice as each plant has its own particular likes but there are some general ranges to aim for. Most plants (even lowlanders) can handle temperatures below 50 degrees for small periods of time. Keep in mind that some can't and some will even be killed by temperatures that low, again do research on your species. A ROUGH estimate of temperatures for highland nepenthes is somewhere around 75-90 degrees during the day with a rough 10-15 degree drop at night.

I can't emphasize enough that you need to research your particular species. It is very difficult to find general guidelines for temperatures and you MUST research your species, preferably before you bring it home. 


Lowland:
Lowlanders can also be conditioned but to a lesser extent. You may still need to provide additional humidity if your local humidity is too low. Some lowland nepenthes will simply require the use of a controlled environment. For this reason it is advised to begin with an intermediate or highland plant.

Lowland plants typically like higher temperatures than highlanders. I won't go into more detail on lowland temperatures for now because my experience is limited to highland and intermediates and I haven't researched temperatures for lowlanders well enough to try to give advise!