Rough Maidenhair Fern (Adiantum hispidulum)

Hedgehog Fern

About this plant

Adiantum hispidulum, known as the Rough Maidenhair Fern, is a graceful fern with delicate, fan-shaped leaflets on wiry black stems. It is admired for its airy appearance and is often used as a decorative houseplant or in shaded garden areas. This fern adds a soft, natural touch to indoor spaces and shaded outdoor spots.

Taxonomy

Family
Pteridaceae
Genus
Adiantum
Plant type
Houseplant
Lifespan
Perennial

Higher classification: Polypodiopsida (ferns)

Origin & Distribution

Native region
Australia, New Zealand, Southeast Asia
Distribution
Native to Australia, New Zealand, and parts of Southeast Asia; cultivated worldwide as an ornamental fern.

Care

Partial shade Light
2–5 days Watering
10–30 °C Temperature
High Humidity
Medium Care difficulty
Suitable locations
Indoor, Outdoor, Balcony, Greenhouse
Preferred window facing
North-facing, East-facing, Northeast-facing, Northwest-facing
USDA hardiness zones
9-11
Soil pH
5.5-6.5 (slightly acidic to neutral)
Soil type
well-draining, rich organic potting mix

Watering. Keep soil consistently moist but not soggy. Water when the top inch of soil feels dry. Increase humidity by misting regularly or using a humidity tray.

Fertilizing. Feed with a balanced, diluted liquid fertilizer every 4-6 weeks during the growing season (spring and summer). Avoid over-fertilizing, which can harm the plant.

Adiantum hispidulum is a delicate fern that prefers indirect light and consistently moist soil. It can be sensitive to dry air and overwatering, so maintaining humidity and proper watering is important. Regular misting and avoiding direct sunlight help keep it healthy.

Propagation

Propagation methods
Division, Cuttings

Ornamental features

Flowering
No

Delicate, fan-shaped green leaflets with dark wiry stems creating a soft, lacy texture.

Toxicity & Safety

Toxic to humansNon-toxic
Toxic to petsNon-toxic
Weed potentialNot considered a weed

Non-toxic to humans and pets, making it safe for homes with children and animals.

Allergy information

Low Allergy risk
None Pollen level

Adiantum hispidulum is generally safe and unlikely to cause allergies. However, people sensitive to plant spores or mold might experience mild reactions. To reduce exposure, keep the plant in a well-ventilated area and avoid excessive moisture that can promote mold growth.

Common problems

Common problems include browning leaf edges from dry air, yellowing from overwatering, and leaf drop if exposed to direct sunlight or drafts.

Uses

Primarily grown as an ornamental plant for indoor decoration and shaded garden areas due to its attractive foliage.

Notes

Prune dead or yellowing fronds to encourage new growth. Repot every 2-3 years in fresh, well-draining soil. Protect from cold drafts and sudden temperature changes.

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