How to care for a Polystichum tsus-simense | Korean Rock FernThe Polystichum tsus-simense, known to some as “The Korean Rock Fern” boasts glossy blueish-green fronds, black stems, and a pinnae that’s oblong and spiny-toothed. He looks perfect in the house as he stays fresh and lush through the seasons but he can also be placed outside in a garden. As long as the garden isn’t too wet or cold.
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- Every 1-2 years
- Medium to low light
- Once a month during Spring & Summer
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The Korean Rock Fern is native to East Asia. It's common name comes from it's ability to grow in rock walls.
Korean Rock Ferns are not known for being an air purifier.
Some parts of the Korean Rock Fern are poisonous to animals and humans so take care when around them or if pets are nearby.
The Korean Rock Fern likes consistently moist soil, so water frequently when the top 1 inch of the soil is dry.
Not a fan of direct sunlight, prefers medium to low light. North-facing windows are a excellent spot.
Would benefit from a dose of all-purpose houseplant fertilizer once a month during the growing season (Spring and Summer).
Will need to be repotted when he starts to show signs of being root bound, this is usually about every one or two years.
As soon as you spot a dead or damaged frond, it would be best to trim it off using clean scissors or pruning shears.
Generally disease and pest free, but always keep an eye out for any potential problems!