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How to Grow Windelov Fern

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Windelov Fern

Microsorum pteropus 'Windelov'

herb

Windelov fern is a delicate aquatic or semi-aquatic fern characterized by its distinctive deeply lobed, lacy fronds that resemble antlers or delicate filigree. This slow-growing fern is popular in aquascaping and indoor water gardens, thriving in humid environments with consistent moisture. It is non-toxic and adds an elegant, feathery texture to any growing space.

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Example Windelov Fern timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Windelov Fern

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Windelov Fern

    Around Jul 16

    ≈ 90 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Windelov Fern dates for your own zip code.

Growing Conditions

☀️
Sun: Moderate indirect light, 8-12 hours daily; avoid direct sunlight which can scorch fronds
💧
Water: Keep constantly moist but not waterlogged in semi-aquatic conditions; in fully aquatic setups, maintain water quality with regular changes (25% weekly for tanks). Prefers 60-75°F water temperatures and high humidity (70-80%)
📏
Spacing: 6-12 inches between plants to allow room for frond expansion inches
📅
Days to maturity: 90-180 days to reach full size; extremely slow-growing
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Planting depth: Do not bury the rhizome; attach to rock or driftwood with fishing line or thread, or place rhizome at soil surface

Soil

Type: Moist, well-draining substrate or aquatic growing medium; can be grown on rock or driftwood without soil
pH: 6.0-7.5
Amendments:
Peat moss Fine aquatic substrate Sphagnum moss for semi-aquatic growing

Growing Zones

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Zones 10-11; typically grown indoors in cooler climates

10a 10b 11a 11b

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Growth Stages

1

Young Plantlet

4-8 weeks

Small fern with 2-4 tiny fronds emerging from a thin rhizome

Maintain high humidity and consistent moisture; provide gentle misting daily; avoid water disturbance

2

Establishment

8-12 weeks

Fronds gradually elongate and develop characteristic lobing; rhizome slowly thickens

Ensure stable water parameters and light; avoid moving or replanting; allow roots to anchor firmly to substrate or driftwood

3

Vegetative Growth

2-4 months

Multiple fronds develop with distinctive deeply lobed, delicate appearance; plant spreads laterally along rhizome

Maintain consistent light and humidity; regular water changes in aquatic systems; no fertilizer needed if in nutrient-rich substrate

4

Mature Plant

Indefinite; plant is long-lived

Lush mound of feathery, lacy fronds with full antler-like appearance; may develop new growth points along rhizome

Continue regular water maintenance; prune dead or damaged fronds at base with clean scissors; divide rhizome if overcrowded

Companion Planting

Plan your garden →

Plant with:

Anubias Java moss Cryptocoryne Bucephalandra Dwarf hairgrass Marimo moss ball

Avoid planting near:

Fast-growing stem plants that overshadow delicate fronds Plants with allelopathic properties Herbivorous fish species that nibble on tender fronds

Common Pests

  • Reduce light exposure, increase water changes, add algae-eating fish or shrimp, avoid overfeeding in aquatic systems

  • and

    Ensure proper water circulation, maintain water quality, avoid burying rhizome, use clean tools when trimming

  • Add liquid fertilizer formulated for aquatic plants monthly; use nutrient-rich substrate; perform regular water changes

  • Keep fern in separate planted tank or use protective mesh; choose compatible herbivore-free communities

Uses

🏠

Aquatic & Semi-Aquatic Landscaping

Household

Windelov fern is prized for aquascaping and aquarium design due to its delicate, lacy fronds that add visual depth and texture. It is perfect for nano tanks, planted aquariums, and semi-aquatic terrariums. [source]

🦋

Fish & Aquatic Invertebrate Habitat

Wildlife

Dense fronds provide shelter, grazing surfaces, and spawning grounds for fish and shrimp, supporting a diverse aquatic ecosystem. It is non-toxic and safe for all aquatic life. [source]

🏠

Indoor Humidity & Air Quality

Household

When grown semi-aquatically in terrariums or humidity chambers, Windelov fern releases moisture through transpiration, helping maintain stable indoor humidity levels. Its lush fronds also filter and oxygenate air. [source]

🎨

Botanical Decoration & Display

Craft

The delicate, feathery fronds make Windelov fern an attractive ornamental plant for living walls, botanical vivariums, and decorative water gardens. Its fine texture adds visual interest to indoor plant collections. [source]

Harvest Tips

This is a foliage plant, not typically harvested. For propagation, divide mature rhizomes with at least 2-3 growth points; attach new sections to fresh rocks or driftwood. Remove dead or damaged fronds by cutting at the base with sterile scissors to maintain appearance and encourage new growth.

Fun Facts

  • 🌱 Windelov fern is a cultivar of Microsorum pteropus (Java fern) and was selectively bred to develop its uniquely lobed, lacy fronds that resemble miniature antlers or fine lace.
  • 🌱 Unlike many ferns that reproduce via spores, Windelov can be propagated by dividing the rhizome, making it easier for gardeners to grow and share this delicate plant.
  • 🌱 This fern thrives when attached to décor elements like rocks or driftwood rather than planted in substrate, mimicking its natural epiphytic growth habit in tropical forests where it grows on trees and fallen wood.
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