Delta Maidenhair Fern 'Fritz Luthi' (Adiantum raddianum 'Fritz Luthi')

Delta Maidenhair Fern 'Fritz Luthi'

Adiantum raddianum 'Fritz Luthi'

Lacy fronds dance in gentle breezes, a soft green tapestry for shaded spaces. Evergreen clumping fern.

Partial sun
2–3/week
Moderate
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Plant Needs

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Sunlight Bright indirect light; avoid direct midday sun which can scorch fronds; tolerates low indirect shade
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Watering Keep soil consistently moist but not waterlogged; use room-temperature water to prevent root shock
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Temperature Thrives in 18–22℃; avoid cold drafts and temperatures below 12℃ which cause frond browning
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Characteristics

  • Frond: Delicate triangular fronds with small, fan-shaped leaflets attached to thin, glossy black wiry stalks
  • Rhizome: Creeping shallow rhizomes that slowly spread to form dense clumps
  • Sori: Spore clusters along the underside of leaflet margins, covered by folded leaf tissue
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Care Guide

Watering

Keep soil evenly moist; mist fronds daily to maintain 50–60% humidity

Fertilization

Diluted balanced liquid feed every 4 weeks. Avoid over-fertilizing, which can burn frond tips

Banana peel compost tea:Compost banana peels for 2 weeks, steep in water for 24 hours, dilute 1:20 for root drench; discard solid peels to prevent mold growth
Pruning
  • Trim browned frond tips with sharp, sterile scissors to maintain appearance
  • Remove dead or fully yellowed fronds at the base to improve airflow
  • Divide overcrowded clumps in spring to propagate and refresh the plant
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA confirmed non-toxic; no risk of poisoning from ingestion or contact

Humans: Non-toxic to humans; no known adverse health effects from ingestion or contact

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental foliage for terrariums, bathroom shelves, or shaded garden borders