I have three different nepenthes in an eastern facing window that had been pretty happy all year. I noticed some old leaves and stem starting to brown on a single plant 6 weeks ago. I left town for about three weeks and had a friend water them while I was away. On my return I have noticed that all three potted plants have brown stems rising up from the base and every leaf along the length of that brown stem also turns brown and dies.
They are all planted in a mix of peat moss, vermiculite, and perlite and they do not drain particularly well. Is this my problem? Should I transplant them into new medium or just take cuttings above the brown? Does anyone have experience with this brown "death?" Any advice would be greatly appreciated!