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Cystopteris fragilis Brittle bladder fern Deciduous fern (1 Page of 5) The Cystopteris fragilis plant species is found in Britain. It is a member of the Dryopteridaceae family. Common gardeners may know the plant as Brittle bladder fern. Cultivation | Propagation | General Uses Medicinal | Edible Uses Latin Name: Cystopteris fragilis Common Name: Brittle bladder fern Family: Dryopteridaceae Author: (L.)Bernh. Known Hazards: Although we have found no reports of toxicity for this species, a number of ferns contain carcinogens so some caution is advisable[200].
Many ferns also contain thiaminase, an enzyme that robs the body of its vitamin B complex. In small quantities this enzyme will do no harm to people eating an adequate diet that is rich in vitamin B, though large quantities can cause severe health problems. The enzyme is destroyed by heat or thorough drying, so cooking the plant will remove the thiaminase[172]. Mature Height: 0.15 Mature Width: 0.23 Habitat: Rocky woods, shady rocks and walls, especially on basic rocks, to 1200 metres[17].
Cultivation Notes: Prefers a shady position in a moist but well-drained soil, succeeding in most soil types[200]. Plants can tolerate up to 4 hours direct sun per day[200]. Prefers a pH between 6.5 and 7, but tolerates a range from 5.5 to 7.5[200]. Plants do especially well when grown in a shaded position on old mortared walls[219].
Members of this genus are rarely if ever troubled by browsing deer[233].
Plants die back early in dry seasons[200].
A very ornamental plant[1].
For further Cystopteris fragilis gardening information click on one of the blue links below Cultivation | Propagation | General Uses Medicinal | Edible Uses
The information above has been supplied solely via the hard work and dedication of the team at 'Plants for a Future'. View their bibliography

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