Giant maidenhair fern (Adiantum formosum)

Giant maidenhair fern

Also known as: Black stem maidenhair

Giant maidenhair fern (Adiantum formosum) is native to Australia and New Zealand and is found in rain forests, watercourses, and gorges. Although the foliage looks delicate, it is a tough, easy-to-grow plant, given enough water. It grows slowly and does not like to be moved once established.

Scientific classification

Species

Giant maidenhair fern (Adiantum formosum)

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Perennial

Lifespan

45 cm to 60 cm

Spread

Green

Leaf Color

White

Flower Color

Green, White

Stem Color

Evergreen

Leaf type

15 - 35 ℃

Ideal Temperature

Images of Giant maidenhair fern

Distribution of Giant maidenhair fern

Distribution Map

Giant maidenhair fern is native to the oceanic regions of the South Pacific major area. It has been introduced to parts of South Asia and East Africa, as well as to island nations within the Pacific Rim. While it thrives in its indigenous habitat, giant maidenhair fern is also cultivated in various regions beyond its native range, adapting to a broad array of environments.

Native

Cultivated

Invasive

Introduced

No species reported

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Habitat

Moist areas, along streams, rainforest, nearby open eucalyptus forest

Hemisphere Trend Curve

Northern

Sorthern

Care Guide for Giant maidenhair fern

Twice per week

Water

Partial sun

Sunlight

15 - 35 ℃

Ideal Temperature

Potting Mix, Garden Soil

Soil Type

Water: Giant maidenhair fern flourishes in tropical environments with consistent moisture, requiring watering twice a week. It is sensitive to drought, needing careful attention to hydration and drainage. Indoor cultivation demands high humidity to mimic natural conditions, especially during the growth season to support lush foliage.

Fertilize: For giant maidenhair fern, apply high nitrogen liquid fertilizer monthly during spring/summer at half strength to promote foliage growth. Avoid feeding in fall/winter. Monitor leaf color and growth for fertilization adjustments, as over-fertilization can cause burn.

Pruning: Giant maidenhair fern has delicate, fan-shaped fronds and thrives in shaded, moist areas. Early spring pruning removes damaged fronds, promotes growth, and enhances air circulation. This practice maintains its aesthetic and contributes to overall health by preventing overcrowding and disease.

Propagation: Giant maidenhair fern is a shade-loving fern that prefers moist, well-drained soil. To propagate, take cuttings with rhizome and frond tissue, and place them in a high-humidity environment. Maintain indirect light and moist soil for root development, allowing giant maidenhair fern to flourish in shaded areas.

Repotting: Repot giant maidenhair fern every 2-3 years in spring, using a slightly larger container with good drainage. Keep the soil consistently moist and provide indirect light for recovery and lush growth, ensuring the plant thrives in its spacious environment.

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