Polystichum rigens rigid shield fern
size/type
low perennial,low perennial
usual height
0,3-0,4m
usual width
0,4-0,6m
leaves
evergreen broadleaf
colour of leaves
location
semi-shade to shade
soil type
neutral to alkaline
soil moisture requirements
evenly moist but well-drained
USDA zone (lowest)
5b (down to -27°C)
winter protection
for zone 5+6
for zone 7
categorized
Polystichum
There can be a confusion about the English common names such as holly fern or shield fern as they refer to more than one genus which is rather misleading. It is always best to differentiate ferns by their Latin names for scientific works and papers. Especially in a genus as large as polystichum which consists of about 500 species. Most of them are Asian taxons and 208 alone are of Chinese origin.Description of the plant:
Rigid shield fern is a compact evergreen fern from Japan. Its bipinnate fronds, especially on older plants, are so dissected that they look like 3-pinnate. They are 30-40 cm long and form a dense, slightly upright but mounding habit. Individual leaflets are leathery, rich green, glossy and textured. Rigid shield fern is a woodland species that lives in light to deep shade with plenty of moisture or air humidity, but well-drained soil. Most polystichum species prefer alkaline soil but they can also get used to slightly acidic soil if rich in nutrients. Although evergreen, we always recommend removing all foliage just above ground level after winter, letting the entire plant re-grow and form new and healthy leaves. Hardy to min. -25 ° C (USDA zone 5b), perhaps more.
Last update: 11-06-2024
