Hard shield-fern is an evergreen fern of woodland slopes and upland limestone screes in Europe, valued for its stiff, glossy, bristly-tipped fronds. It needs shade, moisture and good drainage on a cool, humus-rich site.
Family
Dryopteridaceae (Wood fern family)
Grows as
Fern
Light
Part shade, Shade
Water
Keep the soil evenly moist in growing season and allow it to dry slightly between waterings in winter.
Soil
Humus-rich, free-draining loam, neutral to alkaline; tolerates limestone.
Temperature
Hardy to about -20 °C; prefers cool, mild conditions and dislikes hot, dry summers.
How easy
Easy
Native range
Macaronesia, NW. Africa, Europe to N. Iran, Altay to W. Himalaya
Climate
temperate
About
Polystichum aculeatum, the hard shield-fern, is an evergreen fern native to Europe. It is most abundant in upland regions of the British Isles and western France, where it benefits from the combination of mild winters and moist summers, but also occurs more locally across most of Europe except northern Scandinavia, northern Russia; in the Mediterranean region it is confined to high altitudes. It grows on steep slopes in woodlands. it is sometimes considered an indicator of the presence of ancient woodlands.
Where it grows
It is found in the counties of Down, Antrim and Londonderry in Ireland, throughout the British Isles and Europe except for the northern countries. It is found in mountain limestone screes in the Jura and the alps, and on alpine and subalpine limestone cliffs.
Uses
Polystichum aculeatum is grown as an ornamental plant in gardens, and has gained the Royal Horticultural Society's Award of Garden Merit.
Text excerpted from the Wikipedia article Polystichum aculeatum by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.