OK Here's an update on my trials of sphagnum moss so far.
I've got 3 plants in various blends of soil/moss. First was Tera who was planted in it from birth and has shown much accelerated growth over all the other seeds from the same pack. She's healthy as can be and has grown 1/2 inch overnight on a couple of occassions.
2nd plant was a hempy experiment that didn't work out. Not sure why as it's hard to muck up a 100% perlite mix and I could see the roots at the bottom of the pot so it was feeding fine but just didn't like it. She got repotted a week ago into a 40/30/30 soil/perlite/moss mix and has just started recovering from the operation with some serious growth.
Last one was a cockup of mine. I took a cutting from the reveg plant but couldn't find my rooting hormone and the local DIY store had none either, so I ended up just putting it into a 100% moss pot with some plain water and covered it with a poly bag. Obviously I crossed my fingers too
Yesterday it got a 200ppm veg feed and it has rooted!
I took the bag off last night and put it under the lights but it had wilted within an hour and I feared the worst, but I replaced the bag and this morning the little soldier is back in a proud upright position and looking hot to trot
All in all I'm sold on the use of sphagnum moss and it's just a matter of playing around until I work out the best way to utilise it. Cerebralvibrator is also playing with it and is getting equally amazing results, so it isn't just my imagination.
Here's some pics. Tera went in on May 9 so she's around 6 weeks old. The hempy-gone-wrong went in on 21 May but she didn't like the hempy and had a week of shock after the transplant, so she's 4 weeks old and the cutting is 8 days Today.