Diplazium assimile Plant Care
Diplazium assimile Bedd.
Updated · Sources · How we source care data
Diplazium assimile, the upside-down fern is a tufted fern occurring in eastern Australia. It occurs in damp places in rainforest or tall eucalypt forest.
Every 5–7 days
Filtered sunlight or partial shade
60–75°F
50–70%
At a glance
How do you care for Diplazium assimile?
Water Diplazium assimile every 5–7 days, letting the top layer of soil dry out between waterings, and give it filtered sunlight or 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.
What Is the Diplazium assimile?
Diplazium assimile (Diplazium assimile) belongs to the Athyriaceae family within the Diplazium genus.
Diplazium assimile displays a fern with spreading habit growth habit, reaching up to 2 ft tall with a spread of approximately 3 ft. Diplazium assimile produces non-flowering plant.
Leaf size: approximately 12 inches.
How Often Should You Water a Diplazium assimile?
Diplazium assimile requires watering every 5–7 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 5–7 days
Let soil partially dry between waterings
What Light Does the Diplazium assimile Need?
Diplazium assimile thrives in filtered sunlight or partial shade. Avoid placing Diplazium assimile in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Filtered sunlight or partial shade
What Temperature and Humidity Does the Diplazium assimile Prefer?
Diplazium assimile grows best at temperatures of 60–75°F. Diplazium assimile 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 Diplazium assimile?
Rich, well-draining soil with high organic content. Good drainage is essential for Diplazium assimile to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Diplazium assimile?
Feed Diplazium assimile 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 Diplazium assimile?
Repot every 1-2 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 Diplazium assimile?
Diplazium assimile can be propagated through spores, division of rhizomes. Similar propagation techniques also apply to australian lady fern plant care, which shares the same genus.
Is the Diplazium assimile Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Diplazium assimile, 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 Diplazium assimile?
Diplazium assimile 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 Diplazium assimile Need?
Diplazium assimile grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. In cooler regions, grow Diplazium assimile as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13a
Keep exploring plants
Diplazium assimile 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 Diplazium genus — compare its care with other Diplazium species on PlantoScan.
Diplazium is part of the Athyriaceae plant family — browse all Athyriaceae genera and species.
Diplazium assimile produces blooms — browse other flowering plants.
More Diplazium Species
Other Diplazium species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Diplazium assimile Bedd., family Athyriaceae (first published in Ferns Brit. India 2: t.294. 1868) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Diplazium assimile, 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.
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