I got a
in concern of the sole native "tree-fern" individual i know myself. This plant is likely D. (affinis ssp.) borreri, rather than it's hybrid with D. filix-mas as i do expect.
I do think it's about 20 years ago now that i took the individual from the woods at a mountain close to Frohnleiten, my home town. Until 2020 the fern grew at my parents' property in my small fern garden, where the rhizome grew upwards as a short stem. In May 2020 i gave the Dryopteris affinis to a customer where i worked to plant a potted Trachycarpus fortunei into his garden, and filled 4 large wooden containers with various native Dryopteris spp. and Athyrium filix-femina.
D. affinis with stem-like rhizome was planted separately into a pot, which is apparently too small, likely causing stress to the plant. Yesterday i went to the garden in Graz to watch how the palm and ferns did grow. Trachycarpus was hidden by it's winter-coating, the ferns in wood-containers doing quite well. The D. cf. borreri with stem looks good, despite the leaves seem to have been removed. As i saw, the upright rhizome grew side crowns in addition to the larger, apical one.
Now my
: In case i got a chance to plant this fern into a larger container, would it be good to plant it's rhizome deeper, or perhaps at low angle, so the rhizome got a chance to grow new roots more close to it's crowns, or is this no good idea in general?