Southern maidenhair fern

Adiantum capillus-veneris

No known toxicity☀ Low–bright indirectHard care

Check in 1 day· Jul 14

Estimated check date; keep evenly moist and do not let it fully dry.

Every 2 daysLast watered: 2026-07-12

This is a soil-check date, not an automatic watering date.

Overview

Summary, origin & habitat: A delicate perennial fern found in temperate and tropical regions worldwide, often on moist rock walls, near waterfalls and in shaded seepage areas. It is endangered in North Carolina because of habitat loss.
Interesting facts: It is a true fern and never flowers; the reproductive structures are spores protected along the leaflet margins.
Name story: Adiantum comes from Greek adiantos, “unwetted,” referring to water-repellent fronds. Capillus-veneris is Latin for “hair of Venus.”
History & legends: The fine black stems inspired comparisons with human hair and the goddess Venus. Maidenhair ferns have also appeared in traditional herbals, although household medicinal use is not recommended without expert guidance.

Light: Low to bright indirect light, dappled shade or deep shade. Avoid direct sun.
Temperature: 60–75°F (16–24°C); protect from hot dry air and temperature swings.
Watering: Estimated check date; keep evenly moist and do not let it fully dry.
Fertilizing: Monthly at ¼–½ strength in spring–summer. Do not fertilize dry soil or feed heavily in winter.
Toughness: Low
Difficulty: Hard
Maintenance: High
Maintenance notes: Soil must remain consistently moist but not stagnant. High humidity and freedom from drafts are important.

Mature height: About 10 in.–2 ft
Mature spread: About 10 in.–2 ft
Leaf colors: Bright green, sometimes yellow-green; wiry stems are black, brown or purple-black.
Leaf type / form: Fine-textured arching compound fronds with fan-shaped lobed pinnules on dark wiry stalks.
Best planting / repotting time: Spring is best for division, planting and repotting.
Bloom time: No flowers. Spores are commonly visible during active growth, often in summer.
Flower color: None; spores form along curled leaflet margins.

Toxic if eaten?: No known toxicity
Who is affected: No significant toxicity reported
Possible effects: A true maidenhair fern; not considered a poisonous houseplant. Eating plant material may still upset the stomach.

Pruning: Cut brown fronds at the base. A severely dried plant can sometimes be cut back completely and regrown if the rhizomes remain alive and moist.
Propagation: Divide creeping rhizomes in spring. Spore propagation is possible but slow and technically demanding.
Repotting: Repot every 1–2 years in spring with moisture-retentive, humus-rich mix. Do not expose roots to drying during the process.

Adaptation strategy: Water-repellent fronds shed droplets, creeping rhizomes colonize moist crevices, and spores allow reproduction without flowers or seeds.
Ecological application: Useful in moist shade gardens, woodland containers and wet rock walls. Protecting natural seepage habitats supports native fern populations and associated organisms.