I want to grow moss to a specific design and dont have the time to make the blended mixture, can I grow moss on a wall by sticking clumps of it to a wall with a yoghurt, beer mixture?
I tried that on a cement statue, didn't work for me. The moss just turned brown and died. What is your wall made of? Natural stone or brick? Maybe something more porous like that would help, but I'm skeptical.