Tuberous sword fern - Nephrolepis cordifolia (Care, Characteristics, Invasive, Images)

Tuberous sword fern

Also known as: Herringbone fern, Ladder fern, Tuber ladder fern, Duffy fern, Lemon button fern

Tuberous sword fern (Nephrolepis cordifolia) is an evergreen fern that is often grown as a summer annual in containers. It can serve as ground cover in frost-free regions. It can be invasive if not controlled.

Scientific classification

Species

Tuberous sword fern (Nephrolepis cordifolia)

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Perennial

Lifespan

Fern

Plant Type

All year round

Harvest Time

61 cm to 91 cm

Plant Height

60 cm to 90 cm

Spread

Green

Leaf Color

Brown

Fruit Color

20 - 38 ℃

Ideal Temperature

Images of Tuberous sword fern

Distribution of Tuberous sword fern

Distribution Map

Tuberous sword fern naturally thrives across parts of Asia and the Pacific Islands and has adapted well to various other regions. While it has been cultivated, its presence is noted in subtropical and tropical settings across multiple continents, indicating both a wide cultivation and naturalization range. In certain areas, tuberous sword fern is sometimes thought to be invasive and may have an impact on local ecosystems, especially where its growth is unchecked. Despite these concerns, tuberous sword fern continues to be grown in various locales, occasionally beyond its native zone.

Native

Cultivated

Invasive

Introduced

No species reported

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Habitat

Rocky areas, rainforest margins, parks, gardens, roadsides, fence lines, disturbed sites, waste areas, railway lines, suburban bushland, riparian areas, coastal environs

Hemisphere Trend Curve

Northern

Sorthern

Culture

Garden Use

Tuberous sword fern is an attractive fine-toothed fern that can be used in mid-positions in beds and borders, but only in areas with relatively mild winters. It can make an excellent dense backdrop for flowering plants. Also, woodland gardens are a natural match. Unlike some other ferns, it can be planted in sunny positions as long as it is watered enough. Tuberous sword fern can be grown indoors as well.

Symbolism

Fascination, Sincerity, Magic

Interesting Facts

Nephrolepis exaltata var. bostoniens is a drooping foliage-viewing plant, but in the seedling stage, it grows gracefully upward. As it continues to grow, its branches gradually drop, and then it can be made into a hanging plant for display.

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Quickly Identify Tuberous sword fern

Sword-shaped fronds with finely toothed edges.

Height can reach 2-3 feet (60-90 cm).

Reproductive spores visible on fronds' underside.

Propagates through hairy subterranean runners.

Tolerant of temperatures down to 25°F (-4°C) and dry soil.

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Care Guide for Tuberous sword fern

Every week

Water

Partial sun

Sunlight

20 - 38 ℃

Ideal Temperature

Potting Mix, Garden Soil

Soil Type

Water: Tuberous sword fern thrives in humid environments and maintains moisture in its fronds. Drought-tolerant, it prefers consistent humidity and should be watered weekly. As an evergreen, tuberous sword fern needs regular moisture year-round, especially during cooler months when indoor heating lowers humidity.

Fertilize: For optimal growth of tuberous sword fern, apply high nitrogen fertilizers every 4-6 weeks in spring and summer, using a quarter-strength dilution. Avoid over-fertilization to prevent damage, and reduce feeding in fall and winter. Water tuberous sword fern before fertilizing to enhance absorption and prevent root burn.

Pruning: Tuberous sword fern is a hardy, evergreen fern with tuberous roots, featuring lush fronds. Monthly pruning, especially in early spring, promotes healthy growth by removing yellow or damaged foliage. This practice enhances air circulation and reduces pests. Use clean, sharp tools to prevent disease spread.

Propagation: Tuberous sword fern propagates best through division. Carefully separate tubers ensuring each has a frond and root section. Plant in well-draining medium, maintaining moisture and warmth. Avoid disturbing roots and provide bright, indirect light for new growth establishment.

Repotting: Repot tuberous sword fern in spring using a larger pot to accommodate growth, every 2-3 years. Ensure good drainage and maintain moist, not soggy, soil for recovery. Handle the fronds gently to support healthy development.

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