Osmunda mildei Plant Care
Osmunda mildei C.Chr.
Updated · Sources · How we source care data
Osmunda × mildei is a rare fern, known only from a few locations in the area of Hong Kong. It is also a rarity in that it appears to be a species of hybrid origin within the Osmundaceae.
Every 3–5 days
Shade to partial shade
50–75°F
60–80%
At a glance
How do you care for Osmunda mildei?
Water Osmunda mildei every 3–5 days, letting the top layer of soil dry out between waterings, and give it shade to partial shade. It prefers temperatures of 50–75°F (10–24°C) and 60–80% humidity.
What Is the Osmunda mildei?
Osmunda mildei (Osmunda mildei) belongs to the Osmundaceae family within the Osmunda genus.
Osmunda mildei displays a large, fern-like clumps growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Osmunda mildei produces non-flowering fern.
Leaf size: approximately 24 inches.
How Often Should You Water a Osmunda mildei?
Osmunda mildei requires watering every 3–5 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 3–5 days
Let soil partially dry between waterings
What Light Does the Osmunda mildei Need?
Osmunda mildei thrives in shade to partial shade. Avoid placing Osmunda mildei in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Shade to partial shade
What Temperature and Humidity Does the Osmunda mildei Prefer?
Osmunda mildei grows best at temperatures of 50–75°F. Osmunda mildei prefers humidity levels of 60–80%. A pebble tray or humidifier helps maintain adequate moisture around the plant.
Temperature
50–75°F
Humidity
60–80%
What Soil Mix Works Best for a Osmunda mildei?
Rich, moist, acidic soil with high organic matter content. Good drainage is essential for Osmunda mildei to prevent waterlogging, which leads to root rot and fungal issues.
How Do You Repot a Osmunda mildei?
Divide and repot every 3-5 years. 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 Osmunda mildei?
Osmunda mildei can be propagated through division of rhizomes, spores. Similar propagation techniques also apply to royal fern plant care, which shares the same genus.
Is the Osmunda mildei Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Osmunda mildei, 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 Osmunda mildei?
Osmunda mildei is susceptible to generally pest-free. 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 Osmunda mildei Need?
Osmunda mildei grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. In cooler regions, grow Osmunda mildei as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Osmunda mildei 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 Osmunda genus — compare its care with other Osmunda species on PlantoScan.
Osmunda is part of the Osmundaceae plant family — browse all Osmundaceae genera and species.
Osmunda mildei copes with lower light than most plants — browse the full list of low-light plants.
More Osmunda Species
Other Osmunda species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Osmunda mildei C.Chr., family Osmundaceae (first published in Index Filic. : 474 (1906)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Osmunda mildei, 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 12a, 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
Osmunda mildei 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