Question
I'm growing what you previously told me what was a nepenthes deroose alata. All seems fine and it's currently outside.I keep the soil permanently moist, and I have a simple question. I'm guessing this plant is an intermediate species, so what are appropriate temperature ranges for this plant in the day and also at night e.g. x degrees c - x degrees c. Or you can give figures is Fahrenheit if you wish. And a further point,a recent pitcher has just opened, and at around 7 inches tall, it's the largest pitcher I have had yet. With appropriate conditions, should all new pitchers become increasingly bigger to a maximum possible size?

Answer
Hi Chris,

The deRoose's Alata hybrid is a very tolerant plant.  They seem to be happiest when the daytime temperatures are around 29-30 degrees C daytime and 14-15 degrees C nighttime.  They will tolerate well outside this range (not freezing) but the best growth is in this zone along with about a 14 hour photoperiod.

Seven inches is a pretty common size for pitchers, but I've seen them as large as 12 inches.  They don't seem to get too much larger than that.

Good Growing!

Jeff Dallas
Sarracenia Northwest
http://www.cobraplant.com