Sorry that this is a little bit off topic but how big do Nepenthes get before they flower specifically Nepenthes alata? One person told me that their sanguinea flowered when it was 4 feet tall and mine has not started vining yet though I suspect it will soon. My Nepenthes alata is a bit over 2 feet tall currently.
No problem.
It's been different for different Neps I've had, and I haven't had an alata grow out for me before so I don't have numbers for that one specifically. I can tell you some plants heights that I have bloomed though just to see the variety:
Male - N.aristo, about a meter
Male - N.platychila, about 2 meters
Female - N.ovata 3+ meters
Female - N.robcantleyii maybe a foot tall, but it might actually be a couple inches short of that
Male - N.hamata about a meter
Male - N.spectabilis x talangensis about 3 meters but the shorter (maybe foot tall) basals bloomed at the same time too
Male - N.tenuis 3+ meters
Male - N.inermis a meter to a meter and a half
Male - N.ventricosa x inermis a meter
Male - N.ventricosa x hamata about a meter
Female - N.izumiae x trusmadiensis about a foot and a half
Female - N.sibuyanensis x trusmadiensis about 2 feet to one meter
Female - N.ventricosa x trusmadiensis - so this one is interesting. I had a friend bloom a cutting that was all of 4 inches tall maaaybe but mine had to get to 2 meters to bloom
Female - N.thorelli x campanulata about a meter and a half
Female - N.boschiana x campanulata about a meter and a half
I think that's nearly everything I've bloomed. I'm pretty convinced it's actually an 'hours and intensity of light' thing more than a 'length/height' thing given the amount of plants I have blooming right now all of a sudden because they've gotten considerably less light this winter than they usually do and I've had an explosion of blooms. I have no idea for certain though. Not all of them have been vining when in bloom, but they're not necessarily viners too so... that doesn't really necessarily mean much.