Hi Clive, just have a look at my journals, plenty of mosses in there (just posted some photos today on both journals). Currently I have Weeping, Xmas, Spiky, Taiwan, Willow, Flame and Fissidens Fontanus (don't think I forgot any lol). The fastest grower of the lot is for sure Weeping and would recommend as a moss wall. Xmas moss looks great too but its a slow grower, Taiwan is the last one I got and its looking great, medium growth. Willow seems to be very slow grower also, Spiky grows a medium rate but for me is one of the best looking mosses when its at its best. I can send you some samples if interested.