Good growth but no pitchers

[SWAGnum]

I got three N. spathulata crosses about two months ago and have been growing them in a spare greenhouse at school. They have been growing well and have increased leaf size, but all of the pitchers have aborted. Conditions are full sun, day temps: 70-75, night temps 50-55, moderate humidity(probably somewhere between 50-60%). I think the problem may be the photoperiod. I live quite far north, and right now I only get 7 hours of daylight. Could this be the reason for my lack of pitchers?

 

[Whimgrinder]

I got three N. spathulata crosses about two months ago and have been growing them in a spare greenhouse at school. They have been growing well and have increased leaf size, but all of the pitchers have aborted. Conditions are full sun, day temps: 70-75, night temps 50-55, moderate humidity(probably somewhere between 50-60%). I think the problem may be the photoperiod. I live quite far north, and right now I only get 7 hours of daylight. Could this be the reason for my lack of pitchers?

Yes. It could.
New plants, change of environment recently (2 months barely gets a plant comfortable) and short days can easily lead to no pitchers syndrome. I find supplemental lighting can make a significant difference. Even so, you can expect that pitchering - if any happens at all between now and April - will be sparse and they won't be premium pitchers. Its simply the nature of growing Nepenthes in the winter using natural/available light.

 

[SWAGnum]

I guess I spoke too soon. I just checked on my plants after getting back from Thanksgiving break. My N. spathulata x bongso and N. spathulata x (maxima x (tobaica x talangensis)) both have pitchers inflating.