My comment was on media for Nep. seeds. I recently tried peat/sand,
dried long fiber sphagnum (dried means commercially purchased dry and
then wetted and allowed to stand), and living sphagnum. The peat/sand
and dried sphagnum were microwaved to sterilize them. Two species were
planted in two different trays each divided into thirds. The best
germination for both occurred on the dried sphagnum. Differences were
very noticeable. One unusual finding was that neither species sprouted
on live sphagnum, even tho I have had moderate germination in the past
with this medium.
Tom in Fl.