"water" in Nepenthes is not really water. It is a secretion from the plant. I find that most Nepenthes will not secret again if the pitcher is dry out (in that same pitcher)... But if you want to put water in for the look then any type of water will be fine but your plant have no benefit from it

Dear Kyle, Due to my region is truly tropical, so I have no idea about the cultivation in greenhouse. But I can tell you about the ecological habitat of Nepenthes rajah. Although Nepenthes rajah is a highland species, found from 1,500 to 2,000m. of altitudinal distribution on Mount Kinabalu and Mount Tambuyukon, but actually, it does not grow in dense montane forest. The legend told that this species grows only in the spray zones around waterfalls, on ultramafic soils. It is only true that N.rajah grows on ultramafic soils, but it is certainly not found in the spray zones of waterfalls, in fact it grow in open, grassy slope areas on the mountain with very high rainfall. Although the habitats are exposes to the sun, the presence of cloud and rainfall always decreases the heat and light levels, while humidity levels are high. The temperature at that high altitude often drops to 5c to 10c sometime nearly freezing at night but may climb to 17c-20c during the day. I should say that while I have to grow most of the highland species in cooling-house (air condition plus evaporated chamber), you, in UK, should grow them in greenhouse with sub-tropical condition. This picture shows 'Laban Rata', the base camp at 3,200 m. on Mount Kinabalu, this is nearly alpine zone the only Nepenthes we could find here is Nepenthes villosa As Charles Clarke, the author of 'Nepenthes of Borneo' wrote, "...The sight of N.villosa alone makes the trip up Mount Kinabalu worthwhile..." Good growing!

Josh, I simply put the pitchers in my freezer until they were dry. It takes a month or more, depending on the size and thickness of the pitchers being dried. Some types of pitchers hold their color and some don't. Sarracenia will hold their color for a couple of months after drying, and then turn brown. The large pitcher with the bright burgundy color is spray painted. The Humbolt site is a bit slow to navagate. You have to click on each link to get an image. There are many links and it takes quite a while to just download the lists of each genera you want to look at. Steve

General information: http://www.sarracenia.com/faq/faq5400.html Growing Nepenthes from seed: http://www.carnivorousplants.org/seedbank/species/Nepenthes.htm