moss and the last remains of frost

Today, on the way back from picking up my Christmas pasty (turkey cranberry and stuffing if you're wondering, and yes it was amazing) from the local pasty shop I past this concrete stone wall that was covered in small clumps of moss. towards the top of the wall there were a few patches of frost/snow still clinging on. I thought I'd get one last frosty blip before it warms up again.