Japanese lady fern Plant Care
Athyrium yokoscense (Franch. & Sav.) Christ
Updated · Sources · How we source care data
Athyrium yokoscense, commonly known as Asian common ladyfern in English and as Hebino-negoza in Japanese, is a species of fern in the family Athyriaceae. These tough plants live primarily in and around mine sites and thrive in soils contaminated with high concentrations of heavy metals, such as zinc, cadmium, lead, and copper.
Every 4–7 days
Filtered light, partial shade
60–75°F
50–70%
At a glance
How do you care for Japanese lady fern?
Water Japanese lady fern every 4–7 days, letting the top layer of soil dry out between waterings, and give it filtered light, partial shade. It prefers temperatures of 60–75°F (16–24°C) and 50–70% humidity. Fertilize it every 6 months during the growing season.
Where Is the Japanese lady fern Native To?
What Is the Japanese lady fern?
Japanese lady fern (Athyrium yokoscense) belongs to the Aspleniaceae family within the Athyrium genus. Japanese lady fern is native to Japan, Korea, eastern Siberia and northeastern China and has been known for centuries to tolerate phytotoxic mining sites.
Japanese lady fern displays a clumping, spreading fern growth habit, reaching up to 2 ft tall with a spread of approximately 3 ft. Japanese lady fern produces non-flowering fern.
Leaf size: approximately 18 inches.
How Often Should You Water a Japanese lady fern?
Athyrium yokoscense requires watering every 4–7 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 4–7 days
Let soil partially dry between waterings
What Light Does the Japanese lady fern Need?
Japanese lady fern thrives in filtered light, partial shade. Avoid placing Japanese lady fern in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Filtered light, partial shade
What Temperature and Humidity Does the Japanese lady fern Prefer?
Athyrium yokoscense grows best at temperatures of 60–75°F. Japanese lady fern prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.
Temperature
60–75°F
Humidity
50–70%
What Soil Mix Works Best for a Japanese lady fern?
Rich, well-draining soil with high organic matter content. Good drainage is essential for Japanese lady fern to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Japanese lady fern?
Feed Japanese lady fern every 6 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every 6 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Japanese lady fern?
Repot every 2-3 years in spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Japanese lady fern?
Japanese lady fern can be propagated through division of rhizomes. Similar propagation techniques also apply to lady fern plant care, which shares the same genus.
Is the Japanese lady fern Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Japanese lady fern, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Japanese lady fern?
Japanese lady fern is susceptible to spider mites, aphids, scale insects. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
What USDA Hardiness Zone Does the Japanese lady fern Need?
Japanese lady fern grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Japanese lady fern is native to Japan, Korea, eastern Siberia and northeastern China and has been known for centuries to tolerate phytotoxic mining sites. In cooler regions, grow Japanese lady fern as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13a
Keep exploring plants
Japanese lady fern is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Athyrium genus — compare its care with other Athyrium species on PlantoScan.
Athyrium is part of the Aspleniaceae plant family — browse all Aspleniaceae genera and species.
Japanese lady fern produces blooms — browse other flowering plants.
More Athyrium Species
Other Athyrium species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Athyrium yokoscense (Franch. & Sav.) Christ, family Aspleniaceae (first published in Bull. Herb. Boissier 4: 668 (1896)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Japanese lady fern, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Hardiness zone: USDA Zone 13a, calculated from the plant's minimum temperature.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
Identify Plants Like the
Japanese lady fern Instantly
Scan any plant with your phone camera and get instant ID, care tips, water and fertilizer reminders, and health checks — all in one app.
Free
to download
iOS & Android
platforms
Light & dark
mode
100,000+
species