How to Grow Mounted Fern
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Mounted Fern
Polypodium and other epiphytic fern genera
fernMounted ferns are epiphytic or semi-epiphytic ferns grown attached to wood, cork, or moss poles rather than in traditional soil containers. These plants mimic their natural rainforest habitat where they grow on tree branches and trunks, creating living wall displays and dramatic vertical gardens. Popular mounted ferns include staghorn ferns, rabbit's foot ferns, and various Polypodium species.
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Example Mounted Fern timeline · Pittsburgh, PA (Zone 6b)
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Plant Mounted Fern
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Mounted Fern
Late summer into fallBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact Mounted Fern dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Zones 10-11 outdoors; indoors in any climate with warmth and humidity
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Initial Attachment
4-6 weeksFern is freshly mounted with exposed rhizome or root system attached to substrate on wood or pole
Keep moss constantly moist for 4-6 weeks; mist daily; avoid direct water spray on delicate fronds; maintain high humidity; do not move or disturb mount
Establishment
4-8 weeksNew roots begin anchoring to mount and growing into the substrate; initial fronds may appear slightly stressed
Continue frequent misting and moisture; reduce water disturbance; watch for new root growth and tiny emerging fronds; avoid fertilizing
Vegetative Growth
3-6 monthsFronds elongate and multiply; plant fills out the mount with dense foliage; characteristic shape develops (staghorn, rabbit's foot, etc.)
Maintain consistent moisture and humidity; begin light fertilizing with diluted liquid fertilizer every 2-4 weeks; adjust light based on growth rate; remove dead fronds
Spreading
6-12 monthsFern spreads across mount and downward; rhizomes may extend significantly; mat of moss and roots becomes thick and established
Water deeply but allow slight drying between mistings; fertilize monthly; prune excess growth if desired; roots may need gentle training to follow mount contours
Mature Display
OngoingFully established, lush fern with characteristic growth form; may produce spores on undersides of fertile fronds; plant reaches desired size
Maintain regular misting and moisture; fertilize monthly during growing season; clean fronds gently; consider remounting onto larger substrate if overcrowded
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Increase humidity dramatically; mist fronds multiple times daily; rinse with soft water spray; use insecticidal soap if severe; maintain 60%+ humidity to prevent infestations
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Inspect regularly under fronds; remove manually with soft brush; apply neem oil or horticultural oil; treat every 2 weeks until resolved
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Remove with rubbing alcohol on cotton swab; improve air circulation; apply insecticidal soap; increase humidity slightly but ensure good air movement
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Allow substrate to dry slightly between mistings; use yellow sticky traps; avoid overwatering; improve drainage in mount; apply sand layer on top of moss
Uses
Living Wall Art & Décor
CraftMounted ferns create stunning vertical displays indoors and in greenhouses, transforming plain walls into lush living installations. Popular in modern interior design, terrarium walls, and botanical garden displays. [source]
Air Purification & Humidity
HouseholdFerns naturally improve air quality by absorbing toxins and releasing oxygen. The high-humidity environment created by frequent misting also benefits surrounding plants and contributes to healthier indoor air. [source]
Edible Fiddleheads
CulinarySome fern species (particularly ostrich fern and bracken) produce edible fiddleheads in spring. When available from edible varieties, these tender coils can be steamed, sautéed, or pickled. [source]
Habitat for Insects & Microorganisms
WildlifeMounted ferns with their dense fronds and moist substrate provide shelter and breeding grounds for beneficial insects, small arthropods, and soil microorganisms that support ecosystem health. [source]
Traditional & Herbal Uses
MedicinalVarious fern species have been used in traditional medicine for inflammation, respiratory issues, and digestive support. Bracken fern and lady fern have ethnobotanical applications, though safety considerations apply. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Mounted ferns are ornamental display plants, not typically harvested. However, fronds can be cut for floral arrangements once plant is well-established; remove only 10-15% of fronds at a time; cut at base where frond attaches to rhizome; ferns make excellent long-lasting cut foliage. Spores from fertile fronds can be collected for propagation.
Fun Facts
- 🌱 Mounted ferns mimic their natural rainforest home where they grow as epiphytes on tree branches—some ferns have evolved to spend their entire lifecycle without touching soil.
- 🌱 Ferns are one of the oldest plant groups on Earth, predating flowering plants by over 100 million years and thriving during the age of dinosaurs.
- 🌱 Staghorn ferns develop specialized 'fertile fronds' that look like deer antlers and hold spores; they also create 'shield fronds' that form a basket to catch debris and moisture.
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