felinefancier87 wrote:Previously I've bought (most likely) Canadian sphagnum moss from the local garden store and keeping it wet, with or without a terrarium, but mold grows very fast in this kind of medium especially when covered like in a terrarium (like within a couple of days). It's full of litter and I think the litter might be what gets mouldy, or maybe it's just the wrong type of moss for carnivorous plants. Either way, this has not worked for me and I've killed a fly trap trying to use this type of moss.
Yeah, many brands of sphagnum out there have quite a lot of mold spores in them and are nearly impossible to use indoors unless you run it through a pressure cooker to kill all the spores.
felinefancier87 wrote:So first, I need advice--is dried high quality sphagnum moss like that of New Zealand, or live sphagnum moss, better to use for Drosera prolifera and fly traps?
Not necessarily "better" in all ways but certainly you'll have way fewer mold problems when growing indoors with New Zealand LFSM.
felinefancier87 wrote:Second, if I use either live or dried good quality sphagnum moss in a terrarium, how do I manage it? Fill a pot with that, place the plant in it, and then what? Water from top or keep submerged in a tray and water from the bottom? How wet does it have to be? Is there risk of mould growth from too much humidity?
I'm of the opinion that most carnivorous plants shouldn't be left sitting in water for too long. In my experience, flytraps do much better if they're never left sitting in water. Some sundews as well. Sarracenia like having their feet wet at all times though. No matter how diligent you are with maintaining a healthy moisture level, if you're growing in a terrarium, you will almost inevitably have algae and mold problems. The lack of sunlight and air movement, along with the elevated humidity levels really creates an ideal environment for growing mold and algae and not such a great environment for carnivorous plants which prefer full outdoor sunlight.
felinefancier87 wrote:Third, does dried moss revive and continue to grow, or does it stay dead? How long do dried and live moss last?
We have had a few bales of dried moss that arrived directly from New Zealand and were quickly shipped to us and there was enough moisture in the middle of the bale to keep some of the strands of sphagnum alive enough that they started growing when they were rehydrated. So it's certainly possible but it isn't probable that you'll get dried moss to revive unless it's super fresh off the boat.
I'm not sure what you mean by "how long do dried and live moss last?" because live moss is a living thing and if well cared for can last forever. Dried moss will also last quite a long time but all CPs do like to have their soil freshened from time to time so you'll need to repot them to freshen the moss up. We typically do that annually for flytraps and reuse the old moss in the bottom of the pots.