
Asplenium scolopendrium
Asplenium scolopendrium
Safety & Hazards
Although we have found no reports of toxicity for this species, a number of ferns contain carcinogens so some caution is advisable[1]. 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[2].
Cultivation Details
Plants are hardy to about -30°c[3]. Easily grown in a shady position in a soil that is rich in leaf-mould and is well-drained[3, 4]. Prefers a light sandy soil[5]. Thrives on humus-rich chalky soils[6, 4]. Plants can be grown on drystone walls[7]. Grows well in heavy clay soils. Prefers a shady position with no more than 3 hours sunlight a day, greater exposure will cause yellowing and burning of the leaves[3]. One report says that it succeeds in dry shade[8]. Requires a pH of 6 or more in order to flourish. A very adaptable plant[6]. There are many named forms, selected for their ornamental value[3, 1]. Members of this genus are rarely if ever troubled by browsing deer[9].
Propagation
Spores - best sown as soon as they are ripe on the surface of a humus-rich sterilized soil. Keep the compost moist, preferably by putting a plastic bag over the pot. The spores usually germinate in the spring[5]. Spring sown spores germinate in 1 - 3 months at 15°c[10]. Pot on small clumps of plantlets as soon as they are large enough to handle and grow them on in light shade in a greenhouse. Keep the plants humid until they are well established. Once the plants are 15cm or more tall, plant them out into their permanent positions in the spring. Division in spring. Leaf bases - dig up the plant and wash off the soil until the old caudex covered with 'dead' leaf bases can be clearly seen. Strip off these bases individually by peeling them down the caudex. At the point of attachment they will be green. Young plants can be raised by planting these leaf bases, green tip up, in a pot of loam-based compost and enclosing the pot in a plastic bag. Within one month green swellings will appear around the original point of attachment to the caudex, each of these will develop quite quickly into a young fern. It takes 3 months in summer but longer in winter[1]. Cite as: Temperate Plants Database, Ken Fern. temperate.theferns.info. 2026-02-20. <temperate.theferns.info/plant/Asplenium+scolopendrium>
Pollinators
Data unavailable
References
- [1]The New RHS Dictionary of Gardening. 1992. — Huxley. A. · MacMillan Press · 1992 · ISBN 0-333-47494-5 ↩︎Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
- [2]Discovering Wild Plants - Alaska, W. Canada and the Northwest. — Schofield. J. J. · Alaska Northwest Books; Alaska · 2003 · ISBN 0882403699 ↩︎A nice guide to some useful plants in that area.
- [3]Perennials. Volumes 1 and 2. — Phillips. R. & Rix. M. · Pan Books · 1991 · ISBN 0-330-30936-9 ↩︎Photographs of over 3,000 species and cultivars of ornamental plants together with brief cultivation notes, details of habitat etc.
- [4]KemperCentreForHomeGardeningPlantFinder — Missouri Botanical Garden · http://www.mobot.org/gardeninghelp/plantfinder/ ↩︎Basic cultivation details, plant uses, habitat etc for several thousand species of plants, mainly from the temperate zone.
- [5]RHS Dictionary of Plants plus Supplement. 1956 — F. Chittendon. · Oxford University Press · 1951 · ISBN - ↩︎Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaced in 1992 by a new dictionary (see [ 200 ]).
- [6]Plants for Shade. — Knight. F. P. · Royal Horticultural Society. · 1980 · ISBN 0-900629-78-9 ↩︎A small but informative booklet listing plants that can be grown in shady positions with a few cultivation details.
- [7]Gardening on Walls — Grey-Wilson. C. & Matthews. V. · Collins · 1983 · ISBN 0-00-219220-0 ↩︎A nice little book about plants for growing against walls and a small section on plants that can grow in walls.
- [8]The RHS Gardener's Encyclopedia of Plants and Flowers — Brickell. C. · Dorling Kindersley Publishers Ltd. · 1990 · ISBN 0-86318-386-7 ↩︎Excellent range of photographs, some cultivation details but very little information on plant uses.
- [9]Perennial Garden Plants — Thomas. G. S. · J. M. Dent & Sons, London. · 1990 · ISBN 0 460 86048 8 ↩︎A concise guide to a wide range of perennials. Lots of cultivation guides, very little on plant uses.
- [10]Growing from Seed. Volume 2. — Rice. G. (Editor) · Thompson and Morgan. · 1988 · ISBN - ↩︎Very readable magazine with lots of information on propagation. An interesting article on Ensete ventricosum.
- [11]A Modern Herbal. — Grieve. · Penguin · 1984 · ISBN 0-14-046-440-9 ↩︎Not so modern (1930's?) but lots of information, mainly temperate plants.
- [12]Encyclopaedia of Medicinal Plants. — Chiej. R. · MacDonald · 1984 · ISBN 0-356-10541-5 ↩︎Covers plants growing in Europe. Also gives other interesting information on the plants. Good photographs.
- [13]Edible and Medicinal Plants. — Launert. E. · Hamlyn · 1981 · ISBN 0-600-37216-2 ↩︎Covers plants in Europe. a drawing of each plant, quite a bit of interesting information.
- [14]Shade Plants for Garden and Woodland. — Brown. ↩︎
- [15]The Dictionary of Modern Herbalism. — Mills. S. Y. ↩︎An excellent small herbal.