Interrupted Polypody (Polypodium interjectum)

Interrupted Polypody

Polypodium interjectum

Fronds unfurl in delicate, feathery layers, a quiet woodland beauty. Evergreen fern; common name: interrupted polypody.

Partial sun
1–2/week
Beginner
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Plant Needs

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Sunlight Dappled shade or filtered partial sun; avoid direct midday sun which can scorch fronds
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Watering Keep soil consistently moist but not waterlogged; allow the top 1 cm of soil to dry between waterings
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Temperature Thrives in cool to temperate conditions; tolerates light frost down to 5°C
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Characteristics

  • Frond: Pinnately compound, leathery texture, with distinct gaps between fertile and sterile pinnae
  • Rhizome: Creeping, scaly, brownish, grows along soil or tree bark surfaces
  • Sori: Round, brown clusters on undersides of fertile pinnae when mature
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Care Guide

Watering

Keep soil evenly moist; mist fronds occasionally to boost ambient humidity

Fertilization

Diluted organic feed every 6 weeks. Use low-nitrogen, balanced diluted feed to support frond growth without burning roots

Banana peel compost tea:Fully compost banana peels first, dilute 1:20 with water for root drench; avoid applying undiluted compost to prevent root burn
Pruning
  • Remove brown, dead fronds at the base to improve airflow and appearance
  • Trim overcrowded rhizomes in early spring to control clump spread
  • Snip damaged or yellowing pinnae to maintain a tidy growth habit
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA-approved non-toxic; safe for cats with no reported toxicity

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 woodland ground cover, shaded indoor foliage, epiphytic garden accent