Oakmoss Lichen (Evernia prunastri)

Oakmoss Lichen

Evernia prunastri

Silvery-green fronds drape like delicate lace over bark. Epiphytic lichen; common name: oakmoss.

Partial sun
2–3/week
Beginner
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Plant Needs

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Sunlight Thrives in dappled, indirect light; avoids intense direct sunlight which can dry out delicate fronds
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Watering Mist regularly to maintain consistent high humidity; avoid soaking, as standing water can cause frond rot
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Temperature Prefers cool, consistent temperatures between 10–20°C; tolerates brief dips to 5°C without damage
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Characteristics

  • Frond: Silvery-green, flat, branching, with a slightly leathery texture
  • Structure: Forms tangled, pendulous clumps attached to tree bark or rock surfaces
  • Reproductive Traits: Produces powdery soredia on frond surfaces for asexual dispersal
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Care Guide

Watering

Mist 2–3 times weekly to maintain humidity levels

Fertilization

No regular fertilization required. Avoid chemical fertilizers, as they can damage the lichen's delicate symbiotic structure

Diluted aged aquarium water:Use aged aquarium water (free of added chemicals) to mist fronds; provides mild trace minerals without harming the lichen
Pruning
  • Gently remove dead, brown fronds to maintain a tidy appearance
  • Trim overgrown clumps to fit the mounting space without damaging attached sections
  • Avoid pulling fronds directly from mounts to prevent disruption of the lichen's attachment structure
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats

Humans: May cause mild contact dermatitis in sensitive individuals; no systemic toxicity with typical exposure

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Garden Uses & Culture

Culture: Used in perfumery for its woody, earthy scent; symbolizes quiet resilience in shaded, low-resource environments

Usage: Perfume fixative, decorative epiphyte for terrariums and woodland garden displays