Asplenium antiquum ‘Osaka’

Japanese Bird's Nest Fern

From: £14.95

Known commonly as a bird’s nest fern, the Asplenium antiquum is renowned for its handsome bright green leaves neatly arranged in a spectacular spreading rosette.

The ‘Osaka’ cultivar is a compact variety of the species, which features the attractive ruffling at the edges of its leaves.


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Origin: Malaysia to N. Queensland
Genus: Asplenium
Species / Cultivar: antiquum 'Osaka'
Common Name: Japanese Bird's Nest Fern

Plant Biography

Native to parts of South East Asia, East Africa and Australasia, Asplenium antiquum is an epiphytic fern – in the wild it roots itself to tree crevices, often of palm trees, hence the source of its common name: the bird’s nest fern.

The shape of its spectacular leaf-rosette is crucial to its survival in the wild as it’s used to collect both water and organic matter, essential as the plant often isn’t rooted into soil.

This fern is epiphytic, meaning it grows on the trunk and in crevices of trees, but despite its origins it also thrives as a terrestrial plant planted in soil, like this one.

Asplenium antiquum ‘Osaka’
Light: Medium
This plant likes a spot further away from bright windows, but still lit by natural light.
Soil: Indoor Potting Mix
Enjoys moist well drained soil with composted organics and some drainage material.
Temperature: >13°C
Temperature range at which this plant is healthiest and grows best.
Growth Rate: Medium
Expect to see moderate growth during growing season.
Humidity: High
Provide moist air via daily misting or trays of wet grit. Keep away from drafts and heaters.
Maintenance: A little
Easy to care for, just keep an eye on any extra environmental needs such as humidity.
Eventual Height: 0.7m
The plant's ultimate height in typical growing conditions.
Eventual Spread: 1.2m
The plant's ultimate spread in typical growing conditions.

Expert Tip

This fern works particularly well in a bathroom or kitchen, as they tend to have higher humidity. It can survive in average humidity rooms but for it to really thrive, with larger and shinier fronds, it will need the extra humidity.
Care & Size Guidance

Care & Size Guidance

Ideally, Asplenium antiquum ‘Osaka’ is suited to a warm, humid spot in moderate indirect light.

Water the soil when the surface has slightly dried out, but avoid watering into the centre of the rosette as this can cause rot. Rotate to ensure even growth and form, and improve humidity if the edges of the leaves have turned brown. Any damaged or dead fronds may be carefully removed as needed

This is a slow growing plant but with correct care it can eventually reach a height and spread of up to 1m in maturity.


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