I slaughtered several of these before I figured them out. I find they need a lot of humidity to start. It’s best to keep them in a terrarium while they are small and ever so slowly adapt them to life on a windowsill.
I find they like less light than my other Nepenthes. They grow in a window that gets filtered morning light with a fluorescent lamp making up for the small amount of sunlight.
Pitchers are green to red, on the same plant, round with wings and grow on very long tendrils. Often there are a dozen or more pitchers. I’m not sure how large they will get, I’ve not seen photos of any more than 3″ or so in size.
The plants tend to be busy, sending up many basil shoots. They are hanging rather than climbing Nepenthes.
Mirabilis is a lowland plant, common to south east Asia. It has the widest know distribution of any of the Nepenthes. Mirabilis Var Globosa is only native to one island and the Thai mainland. There are dozens of natural hybrids. The habitat was wiped out in the 2004 tsunami. Plants are being cloned in labs in an attempt to re-establish the population.