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Asplenium antiquum 'Osaka'
Asplenium antiquum 'Osaka' is a selected bird's‑nest fern cultivar prized for its narrow fronds with pronounced rippled margins. It grows as an evergreen rosette indoors, prefers bright indirect light and higher humidity, suits buyers wanting a decorative, pet‑safe houseplant, but isn't easily divided and is usually supplied via spores or tissue culture.
- height Height
- 20 cm
- swap_horiz Pot Size
- 12 cm
- volunteer_activism Care
- Easy
- wb_sunny Light Needs
- Indirect light
- pets Pet Friendly
- water_drop Watering Needs
- Medium
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Quick care table
Plant care at a glance
| Care factor | Asplenium antiquum 'Osaka' |
|---|---|
| Botanical name | Asplenium antiquum 'Osaka' |
| Common name | bird's‑nest fern, Japanese bird's‑nest fern, bird's‑nest fern 'Osaka', and Osaka bird's‑nest fern |
| Difficulty | Easy |
| Light | Indirect light |
| Humidity | Medium |
| Pet safe | Yes, non-toxic to pets |
| Best for | Indoors |
Ruffled, narrow fronds with pronounced undulate margins
The narrow, strap‑shaped glossy green fronds are the first thing you’ll notice: each blade bears a regular, rippled or ruffled edge that gives a dense, sculptural texture to the compact bird's‑nest fern rosette. This pronounced undulate margin is the defining visual trait of Asplenium antiquum 'Osaka', producing a tidy, upright crown with a smooth midrib and spore sori beneath the leaves.
Growth stays architectural rather than vining — new fronds unfurl from a single central nest and the wavy margin is visible as blades mature. It does not climb or trail; because the plant keeps a single apical rosette, routine division is limited and commercial supply is typically by spores or tissue culture rather than repeated offsets.
In real homes you’ll see steady, moderate growth under bright, indirect light; growth slows in lower light. Expect sensitivity to low humidity (brown tips) and a genuine risk of crown rot if water pools in the nest — that trade‑off means you’ll need to watch moisture and air circulation. Collectors prize 'Osaka' for its consistent edge texture, but it is an established nursery cultivar and is commonly available rather than a rare sport.
Best suited to shelves, tabletops, bathrooms or small‑planter groupings where its compact rosette reads as architectural texture. This listing is offered in a single medium p12 option (shelf‑friendly size), so you’ll receive a neat, ready‑to‑display specimen rather than a large floor specimen.
Shipping Information
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- All orders are subject to a €25 minimum order value requirement
- All orders are hand-picked and shipped from the Netherlands
- Plastic-free materials when possible
- Orders are usually processed in 1-3 working days and shipped via DPD and their international partner carriers
- At times, orders may take up to 7 days to ship
- Orders to Germany Free shipping over €60. Free shipping all other EU countries* at €100 (Except Malta and Cyprus)
- Shipping costs are calculated at checkout based on delivery country:
See our FAQ and Shipping Guarantee for any further Questions!
Size: Medium - P12 H20
Plant questions, answered
What visually defines Asplenium antiquum 'Osaka' and how does it differ from a standard bird’s‑nest fern?
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The defining feature is pronounced, regular undulate (wavy/ruffled) margins on narrow, strap‑shaped fronds. Asplenium antiquum 'Osaka' forms a tidy, upright bird’s‑nest rosette with consistently rippled edges, unlike broader, flatter A. antiquum/A. nidus selections. This creates a more sculptural, textured appearance for decorative indoor displays.
Is Asplenium antiquum 'Osaka' safe for homes with pets?
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Asplenium antiquum 'Osaka' is widely reported as non‑toxic to cats and dogs. Major pet‑safety resources list bird’s‑nest ferns (Asplenium spp.) as non‑toxic, but avoid letting pets chew leaves because any plant material can cause mild digestive upset. Consult a veterinarian for specific pet health concerns.
Where should I place 'Osaka' indoors for healthiest fronds?
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Place Asplenium antiquum 'Osaka' in bright, indirect light and higher humidity for best frond expression. It tolerates lower light with slower growth; avoid direct sun to prevent scorch. Practical spots include shaded windows, bathrooms or near a humidifier or regular misting to keep margins full and reduce brown tips.
What common problems does 'Osaka' develop and how can I prevent them?
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Common problems are brown tips from low humidity, sun scorch from direct light, mealybugs or scale if dusty or stressed, and rot when water pools in the crown. Prevent these by using an airy, well‑draining substrate, avoiding pouring water into the crown, keeping humidity up, and inspecting and treating pests early with gentle washing or appropriate insecticidal soap.
Can I propagate or divide Asplenium antiquum 'Osaka' at home?
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Propagation is usually by spores or tissue culture; routine division is limited because 'Osaka' keeps a single apical rosette. Asplenium antiquum 'Osaka' rarely produces offsets, so expect nursery‑propagated plants rather than easy home division or cuttings. Seek specialist guidance for spore or lab propagation if needed.
Is 'Osaka' a rare cultivar or easy to find in European trade?
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It is an established, commonly available cultivar rather than a rare collectible. Asplenium antiquum 'Osaka' is widely propagated and traded in nurseries across Europe and is valued by collectors for its regular rippled margins, but it is not typically a limited‑edition or single‑source sport.
Plant care guide
Light
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Water
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Soil and repotting
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Humidity and temperature
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Feeding
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Growth and support
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Common concerns
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Brown leaf tips from low humidity or inconsistent watering; leaf scorch from direct sun; occasional mealybugs or scale if dusty/stressed; rot risk if water pools in the central crown or the media is poorly drained.