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Korean Rock Fern (Polystichum tsus-simense)

Korean Rock Fern (Polystichum tsus-simense)

Korean Rock Fern (Polystichum tsus-simense) is a compact and elegant fern known for its glossy, arching fronds and refined texture. Native to East Asia, this evergreen fern produces narrow, finely divided fronds that form a dense mound of deep green foliage. Its structured yet delicate appearance makes it a popular choice for shaded plant displays and fern collections.

This fern maintains a tidy, low-growing habit that works well in containers, terrariums, and shaded indoor plant arrangements. The fronds emerge in layered clusters from the centre of the plant, creating a graceful fountain-like shape that adds soft texture to plant groupings. Its polished foliage and manageable size make it suitable for tabletops, shelves, and shaded interior spaces.

Korean Rock Fern is valued for its durability compared to many other ferns. Its tolerance for typical indoor humidity levels and steady growth make it an excellent option for those looking to add classic fern texture to their plant collection without the higher maintenance often associated with delicate fern species.

Sizing Description:

X Small: 2" / 5cm Diameter

Small: 4" / 10cm pot diameter 

Regular price Starting at $5.99
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Sun Requirements ▾

Bright indirect light to moderate shade is ideal for this fern. It thrives in locations away from direct sunlight, such as near north- or east-facing windows. Too much direct sunlight may scorch the delicate fronds, while very low light can slow growth.

Watering Instructions ▾

Water when the top portion of soil begins to dry while keeping the soil consistently lightly moist. Korean Rock Fern does not tolerate prolonged dryness, but overly wet soil can cause root problems. Maintaining evenly moist soil helps support healthy frond development.

Care Tips ▾

Korean Rock Fern grows best in a well-draining potting mix rich in organic matter that retains some moisture while allowing airflow around the roots. The plant prefers stable indoor temperatures and moderate humidity levels. Consistent environmental conditions and good airflow help maintain healthy fronds and steady growth.
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