Ebony Spleenwort (Asplenium platyneuron)

Ebony Spleenwort

Asplenium platyneuron

Its fronds unfurl in delicate, feathery tiers, a quiet woodland gem. Evergreen fern; common name: Ebony Spleenwort.

Low light
2–3/week
Beginner
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Plant Needs

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Sunlight Prefers dappled deep shade or low indirect indoor light; avoid direct midday sun which scorches leathery fronds
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Watering Keep soil consistently moist but not waterlogged; allow top 1 cm of soil to dry slightly between waterings to prevent root rot
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Temperature Thrives in cool to temperate temperatures; protect from frost below 5°C and extreme heat above 28°C
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Characteristics

  • Frond: Leathery, lance-shaped fronds with dark, glossy stipes (stalks) that give the "ebony" common name.
  • Sori: Linear rows of spore clusters on undersides of mature fronds for reproduction.
  • Habit: Dense, low-growing evergreen tufts forming compact clumps over time.
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Care Guide

Watering

Keep soil evenly moist; mist fronds 1–2 times weekly to boost humidity

Fertilization

Diluted low-nitrogen feed once every 6 weeks. Avoid over-fertilizing, as excess nutrients can damage frond growth

Composted leaf mold tea:Steep fully composted leaf mold in water for 24 hours, dilute 1:20 for root drench; discard solids to prevent mold or pest issues
Pruning
  • Remove brown, dead fronds at the base to improve airflow and tidy appearance
  • Trim damaged frond tips with clean, sharp scissors to maintain a neat shape
  • Divide overcrowded clumps in early spring for propagation and to reduce competition for nutrients
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA-verified non-toxic to cats

Humans: No known toxic effects on humans

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Garden Uses & Culture

Culture: N/A

Usage: Woodland ground cover, low-light indoor foliage, rock garden accent