cultivation of lycopodium clavatum

Has anyone had any success propagating or cultivating this or other temperate Lycopodiums? I took a 3 inch cutting from a wild plant and layed it on top of some evenly moist peat/sand mix (moistened by rainwater) in a 4 inch pot and covered it with a ziplock bag to retain humidity. I set the pot outside in full shade. Three weeks have passed and the cutting has already sent an adventitious root down into the soil and has grown about 3 or 4 lateral shoots about 1 inch or so in length.

My question is what to do next? Since everything I've read about the cultivation of temperate Lycopodiums suggest that a high failure rate is to be expected, I'm unsure of how to proceed with transplanting or growing it on. Does this plant absolutely need mycorrhizae to survive? I am also growing Selaginella wallacei and it doesn't seem depend on that requirement. Any suggestions?