0Polystichum tsus-simense
Automatic base data (GBIF, Wikidata, Wikipedia) is queued – it will appear here in a few minutes. Meanwhile, share your experience below!
Tips & experience from members
What worked for you? Your plant’s growing conditions are attached automatically, so others can see who it works for.
No tips for this species yet – be the first to share what worked for you!
How members water it
Not enough logs yet: at least 3 plants with regular watering logs are needed (now: 0). Waterings logged in Care feed this – anonymised and aggregated.
How it thrives
Watermedium
Lightshade
Humiditymedium
Min. temperature-10 °CJanuary
When the top 2–3 cm of soil are dry – less often in winter, with room-temperature water.
No feeding now.
It can stay outside. Wrap the pot (hessian, polystyrene) and keep it against the house wall, out of the rain.
February
When the top 2–3 cm of soil are dry – less often in winter, with room-temperature water.
No feeding now.
It can stay outside. Wrap the pot (hessian, polystyrene) and keep it against the house wall, out of the rain.
March
When the top 2–3 cm of soil are dry.
First weak dose at the end of the month if it is actively growing.
Bright indirect light, north or east window.
April
When the top 2–3 cm of soil are dry.
Liquid feed every 2–3 weeks.
Bright indirect light, north or east window.
May
When the top 2–3 cm of soil are dry.
Liquid feed every 2–3 weeks.
Bright indirect light, north or east window.
June
When the top 2–3 cm of soil are dry – more often in heatwaves, preferably in the evening.
Liquid feed every 2–3 weeks.
Bright spot without direct sun, north or east window.
July
When the top 2–3 cm of soil are dry – more often in heatwaves, preferably in the evening.
Liquid feed every 2–3 weeks.
Bright spot without direct sun, north or east window.
August
When the top 2–3 cm of soil are dry – more often in heatwaves, preferably in the evening.
Liquid feed every 2–3 weeks.
Bright spot without direct sun, north or east window.
September
When the top 2–3 cm of soil are dry.
Liquid feed every 2–3 weeks.
Bright indirect light, north or east window.
October
When the top 2–3 cm of soil are dry.
No feeding now.
Bright indirect light, north or east window.
November · now
When the top 2–3 cm of soil are dry.
No feeding now.
Bright indirect light, north or east window.
December
When the top 2–3 cm of soil are dry – less often in winter, with room-temperature water.
No feeding now.
It can stay outside. Wrap the pot (hessian, polystyrene) and keep it against the house wall, out of the rain.
Polystichum tip: Cut off old fronds in spring before the new ones unfurl.
Korean rock fern – what to know
Korean rock fern (Polystichum tsus-simense) – family: Dryopteridaceae, genus: Polystichum. Care guidelines: light: shade; water: medium; min. -10 °C. It is not known to be toxic to cats or dogs.
All Polystichum species in the catalog →Detailed toxicity data →
Frequently asked questions
How often should I water Korean rock fern?
Moderately: water when the top 2–3 cm of soil is dry, and never let it sit in standing water.
How much light does Korean rock fern need?
It copes well with partial shade and darker spots; keep it out of harsh direct sun.
How cold can Korean rock fern get?
Frost-hardy to about -10 °C – it can overwinter outdoors in many climates.
Is Korean rock fern toxic to cats and dogs?
It is not known to be toxic to cats or dogs.
What members’ data shows
When does it really bloom?
No blooms logged yet. If yours flowers, your data will be the first!
Average watering interval
Not enough watering logs yet. Waterings logged in the care hub feed this chart.
Questions about this species
Polystichum
Care data is for guidance only.
Log in to comment.