Polystichum tsus-simense, commonly known as the Korean rock fern, is a perennial herbaceous plant native to East Asia.

The geographic origin of P. tsus-simense is the East Asian countries, such as China, Korea, Japan, Thailand, and the Indochina region.

[2] Although it is not native to the United States, the Korean rock fern has been introduced to the country through Florida and Louisiana.

[1] Polystichum tsus-simense flourishes in shady areas with partial to no sun exposure in fertile and well-drained soil with high moisture.

[3] The sporangia, dark brown vessels, contain spores, and are grouped into round clusters called sori.

[4][5] With little sunlight required, it is a suitable candidate for a potted plant indoors, on a deck, or the porch.