What a nice plant, this fern is als one of my favourites. I grow it since almost 20 years
in the open garden without any winter protection and also seems to like tufa to grow on.
Small plants from spores appear from time to time and are very welcome.
It is always amazing, when young plants from ferns like Ceterach, Cheilanthes, Pellea
appear in unexpected places, Phyllitis scolopendrium can become almost weedy.