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Polypodium formosanum

15th September 2018 22nd March 2019
Polypodium formosanum (now Goniophlebium formosanum) is a small, creeping fern from southern Japan (Kyushu), south China and Taiwan. It has very distinctive blue-green rhizomes. It is given a hardiness estimate of 0degC so it was pushing its luck in my greenhouse. I kept it for three or four years but it was going backwards. In retrospect I am not sure if it was too cold or too wet and I think it is worth another try if I get the chance.