[shawnintland]

The only place my sphagnum 'grows' is in my seedling boxes. I assume because of the extremely high humidity. I'm keeping a couple of my old boxes going just for the sphagnum even though all the nep seeds germinated and were transplanted months ago!
Most all of them were either 'regenerated' dry sphagnum or possibly from spores within the dried stuff. Good luck and if you find the key, let us know!