I recently became interested in carnivores, and decided to attempt growing sphagnum. Here is what I have after about two months:
I started with dried sphagnum, wet with distilled water in a Rubbermaid container and kept in a sunny room. I seem to have three things growing: 1. Plants that look like tiny green bottle brushes, about 2-3 mm diameter. 2. Long, thin, leafless green filaments, about 0.2 mm by 20-30 mm. 3. Down in recesses in the media, stuff that looks like the dried sphagnum slowly turning green.
Is any of this actually new growth of sphagnum? For the bits that aren't, should I weed them out or encourage them?
BTW, here's my gnat-munching Drosera that sparked my interest (note a couple of the little bottle-brush things near the base of the plant on the left):
Nothing you see in there is sphagnum; the thin leaves are a species of grass (forget the name) that is extremely invasive in pots, the other "bottle brush" plants are nonsphagnous mosses that could become an issue and produce masses of stolons that are nearly impossible to get rid of completely, and the green in the base is algae