Unequal Filmy Fern (Hymenophyllum inaequale)

Unequal Filmy Fern

Hymenophyllum inaequale

Delicate, lacy fronds bring woodland softness to shaded spaces. Epiphytic fern; common name: Unequal Filmy Fern.

Low light
2–3/week
Moderate
🌱

Plant Needs

☀️
Sunlight Requires dappled, indirect low light; avoid all direct sun exposure to prevent frond scorching
💧
Watering Keep growing medium consistently moist; mist daily to maintain high ambient humidity
🌡️
Temperature Thrives in cool, stable humid conditions; avoid temperatures below 12°C or above 28°C
🔍

Characteristics

  • Frond: Delicate, deeply divided lacy leaves with thin, translucent tissue; unequal pinnae give the species its name
  • Sporangia: Small, inconspicuous clusters along leaf margins
  • Habit: Epiphytic, grows anchored to damp tree bark or shaded rock surfaces
🛠️

Care Guide

Watering

Maintain consistent moisture; mist twice daily to boost humidity

Fertilization

Diluted weak liquid feed once every 6 weeks. Use nitrogen-leaning diluted feed to avoid overstimulating frond growth at the cost of tissue strength

Composted banana peel tea:Compost banana peels for 2 weeks, steep in water, dilute 1:20 for root drench; avoid applying undiluted to prevent root burn
Pruning
  • Trim brown, damaged fronds at the base to maintain plant appearance and air circulation
  • Remove dead sporangia clusters to reduce risk of fungal growth
  • Thin overcrowded fronds to ensure even light penetration across the plant
⚠️

Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: No documented toxicity to cats

Humans: No documented toxicity to humans

📖

Garden Uses & Culture

Culture: N/A

Usage: Ornamental terrarium plant; shaded woodland garden groundcover