Java Fern Windelov Plant Care Guide (Microsorum Pteropus 'Windelov')

Java Fern 'Windelov' (Microsorum pteropus 'Windelov') is one of the most distinctive and visually striking aquarium ferns in the freshwater hobby. A cultivated variety of the classic Java Fern, Windelov is instantly recognizable by its intricately branched, lacy leaf tips that give the plant its alternate name, Lacey Java Fern. Originally developed in Denmark and named after Holger Windeløv, founder of Tropica, this cultivar offers all the legendary hardiness of regular Java Fern with a more refined and ornamental appearance. Windelov is a top choice for aquascapers seeking an eye-catching, low-maintenance midground plant that thrives on hardscape rather than substrate.

 

Java Fern Windelov Plant Overview

• Common Name: Java Fern Windelov, Lacey Java Fern

• Scientific Name: Microsorum pteropus 'Windelov'

• Origin: Cultivated variety (parent species from Southeast Asia)

• Placement: Midground, attached to hardscape

• Maximum Height: 6–10 inches

• Growth Rate: Slow

• Care Level: Very Easy

• Lighting Requirements: Low to Medium

• CO2 Requirements: Not required

• Temperature: 68–82°F

• pH Range: 6.0–7.5

Windelov is propagated through rhizome division and the spontaneous formation of plantlets on mature leaves.

 

Why Java Fern Windelov Is One of the Best Aquarium Ferns

Windelov combines the unbeatable durability of Java Fern with a unique, decorative leaf structure that stands out in any aquascape. Its branched leaf tips create a layered, almost coral-like silhouette.

Benefits of Java Fern Windelov include:

• Decorative, lacy leaf tips with unique branching pattern

• Extremely hardy and beginner-friendly

• Thrives without CO2 or special substrate

• Attaches to driftwood, rocks, and decorations

• Compatible with shrimp and most fish species

• Resistant to being eaten by herbivorous fish

 

Java Fern Windelov Lighting & CO2 Requirements

Windelov prefers low to medium aquarium lighting. Strong direct lighting can cause leaf damage, including translucent patches or yellowing.

For best results:

• Use low to medium planted tank lighting

• Provide 6–8 hours of light daily

• Avoid direct, concentrated bright spots

• Allow shade from taller plants if lighting is intense

CO2 injection is not required for Windelov. The plant grows slowly regardless of CO2, though it can accelerate growth modestly.

 

Without CO2

• Steady, reliable growth

• Excellent for low-tech tanks

• Compatible with planted shrimp tanks

With CO2

• Slightly faster leaf development

• More vibrant green color

• Improved overall health

 

Best Placement for Java Fern Windelov

Windelov absorbs nutrients through its rhizome and leaves, not through its roots. It must NEVER be planted in substrate.

Recommended attachment methods include:

• Tying to driftwood with thread or fishing line

• Gluing to rocks with aquarium-safe super glue gel

• Wedging into rock crevices

• Attaching to decorations

The dark, horizontal rhizome will rot if buried in substrate, killing the plant.

 

How to Attach Java Fern Windelov

To plant Windelov successfully:

1. Position the rhizome flat against the chosen hardscape surface

2. Secure with cotton thread, fishing line, or aquarium-safe super glue gel

3. Ensure the rhizome remains fully exposed to water

4. Place in moderate-flow areas of the tank

5. Allow several weeks for natural rhizoid attachment

After 4–8 weeks, the plant will anchor itself permanently and any binding material can be removed.

 

Java Fern Windelov Maintenance

Windelov requires minimal maintenance once established. Its slow growth rate means it does not need frequent trimming.

Maintenance tips:

• Remove yellowed or damaged leaves at the rhizome

• Trim long or aged leaves to encourage new growth

• Dose comprehensive liquid fertilizer occasionally

• Watch for plantlets forming on older leaf tips

Plantlets that develop on mature leaves can be removed and attached elsewhere to expand your aquascape.

 

Ideal Tank Mates for Java Fern Windelov

Windelov is compatible with nearly any peaceful freshwater community and is particularly popular in shrimp tanks.

Compatible tank mates include:

• Cherry Shrimp, Crystal Shrimp, and Amano Shrimp

• Tetras, Rasboras, and Danios

• Bettas and Gouramis

• Angelfish and Discus

• Corydoras Catfish

• Otocinclus and other peaceful algae eaters

Most herbivorous fish avoid Java Fern due to its tough, slightly bitter leaves.

 

Common Java Fern Windelov Problems

Black Spots on Leaves

Often confused with disease, these are usually plantlets forming on aging leaves and are completely normal. They can be detached and replanted.

Translucent or Browning Leaves

Indicates excessive lighting or nutrient deficiency. Reduce light intensity and add liquid fertilizer.

Rotting Rhizome

Caused by burying the rhizome in substrate. Lift the plant and attach to hardscape immediately.

Slow or Stalled Growth

Often the result of insufficient water column nutrients. Dose comprehensive fertilizer with iron and trace elements.

 

Final Thoughts

Java Fern Windelov is one of the most rewarding plants in the freshwater hobby, blending unbeatable durability with a striking ornamental appearance. Its lacy, branching leaves transform driftwood and rockwork into living art, while its undemanding nature makes it perfect for low-tech tanks, shrimp colonies, and aquascapes of every size. With proper hardscape attachment and modest care, Windelov will reward you with years of slow, steady, beautiful growth.

Looking for a striking, easy-care fern for your aquascape? Browse AquaticMotiv's collection of live aquarium plants, Java Fern varieties, and decorative aquatic ferns shipped directly to your door.