Korean Rock Fern or Tsu-sima Holly Fern, is a herbaceous evergreen. It is a creeping, crown forming rhizome. It prefers wet or evenly moist soil. Plant in humus-rich soil in partial to full shade. It prefers cool temperatures. Poor drainage may lead to crown rot, especially in the winter. VIDEO Created by NC State Extension's Homegrown series featuring Mark Weathington , Director of JC Raulston Arboretum . More information on Polystichum .
Curated pairwise relationships between this plant and others in the library — who feeds
whom, who competes, who confuses the pests. Green reads as a good pairing, red as one to avoid.
No curated interactions recorded for this species yet.
Also noted by NC State
Related species the NC State Plant Toolbox flags for this plant — look-alikes to tell
apart, and plants that play a similar role in a planting. Ones we carry in the library are linked.
Glossy, dark green fronds. The blade is lance-shaped and bipinnate with black veins. Basal pinnules of pinna are conspicuously separated and larger. Pinnules sharply cut, terminating in bristles. Petiole has persistent, long, dark scales.
Flower detail
No flowers.
Fruit detail
No fruits. This plants reproduces via spores.
Stem color
Green
Wildlife & Ecology
Native status
Non-native
Origin
Zimbabwe to S. Africa, , Himalaya to Japan and Vietnam