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Polystichum aculeatum Hard shield fern Evergreen fern (1 Page of 5) The Polystichum aculeatum plant species is found in Britain. It is a member of the Dryopteridaceae family. Common gardeners may know the plant as Hard shield fern. Some home gardeners know the variety as P. lobatum. Aspidium aculeatum. Cultivation | Propagation | General Uses Medicinal | Edible Uses Latin Name: Polystichum aculeatum Common Name: Hard shield fern Family: Dryopteridaceae Author: (L.)Roth. 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: 0.75 Mature Width: 0.5 Habitat: Deciduous woodland, often on limy soils, and sometimes on shaded limestone outcrops[187]. Especially in the wetter areas of Britain[17].
Propagation Notes: Spores - best sown as soon as they are ripe, though they can also be sown in the spring. Sow them on the surface of a humus-rich sterilized soil. Keep the compost moist, preferably by putting a plastic bag over the pot. Pot on small clumps of plantlets as soon as they are large enough to handle and keep humid until they are well established. Do not plant outside until the ferns are at least 2 years old and then only in a very well sheltered position.
Division. This is best done in the spring.
For further Polystichum aculeatum 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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