Easy to miss, Asplenium trichomanes or Maidenhair Spleenwort, whilst delicate looking is actually extremely hardy (H6 - which is down to −20 °C). The leaves of this species are composed of numerous tiny leaflets held onto a wiry deep brown central stem which comes from the centre of the rosette. Numerous rosettes make a clump.
It’s one of our native evergreen ferns which grows in a range of rocky habitats, including cliffs, rock faces, screes, and perhaps now most commonly, on walls. Yes, walls! Of course they do. I’ve seen them! How could I have not used this fern already in one of my schemes? Maybe because they are so unassuming. They don’t shout out at you saying ‘use me, I’m a beautiful fern’. So they get overlooked. But it will be ignored no longer. I intend to test the little Spleenwort out and include it in my next living wall. Mixed in with some Soleirolia soleirolii, moss and a few other ferns, it’ll look ace, just as it does in nature. They are however tiny and I’m going to need a lot of them, so I better get plant hunting. (Lucky for me they grow like weeds in devon!)