I have a few small and a couple of medium sized S. leucophylla in a 6" pot that recently came out of dormancy. All of them are doing well except for one of the medium sized ones which started putting up pitchers, but stopped well before they were fully developed. The pitchers started shrivelling, then the visible part of the plant turned completely brown. I have since clipped all of the shrivelled pitchers. There appears to be a small pitcher forming (about 0.5" tall and completely red), but the tip appears to be turning black.
The pot is sitting in about 1.5" of RO water and gets about 8 hours of full sun. I repotted the plants into fresh soil (50/50 peat/perlite) and divided the rhizome in February, and have been spraying the plants with orthene every other week since they emerged from dormancy in early March. I would dig up the rhizome and check to see if it looks healthy, but I'd rather not disturb the other plants in the pot if I do not have to.
Any ideas on what the problem may be?