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Korean rockfern

Polystichum tsus-simense

Also called Korean Rock Fern, Mourning Shield Fern, Tsushima Holly Fern, Tsushima Shield Fern

Korean rockfern
Photo: Daderot, CC BY-SA 4.0

Korean rock fern is an evergreen perennial fern native to East Asia, valued in home gardens for its glossy, dark green fronds and tolerance of shady spots, including rock walls. It grows well in shade with consistent moisture and well-drained soil.

Family
Dryopteridaceae (Wood fern family)
Grows as
Fern, Perennial
Light
Full sun, Part shade
Water
Keep soil evenly moist but not soggy, and water when the top layer begins to dry.
Soil
Humus-rich, well-drained soil or a peat-based mix with grit.
Temperature
15–25 °C; protect from hard frost below about -10 °C.
How easy
Easy

About

Polystichum tsus-simense, commonly known as the Korean rock fern, is a perennial herbaceous plant native to East Asia. Its common name corresponds with its ability to grow in shady areas of rock walls. This fern species is a familiar ornamental plant grown in home gardens.

Where it grows

The geographic origin of P. tsus-simense is the East Asian countries, such as China, Korea, Japan, Thailand, and the Indochina region. The specific epithet tsus-simense (often written as tsussimense) refers to Tsushima Island. Although it is not native to the United States, the Korean rock fern has been introduced to the country through Florida and Louisiana.

Other Polystichum plants

Christmas fern · Hard shield-fern · Western swordfern · Japanese Tassel Fern · Black Shield Fern · Soft Shield Fern · Hollyfern

Text excerpted from the Wikipedia article Polystichum tsus-simense 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.

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