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.
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.
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
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.
Steady, reliable growth
Excellent for low-tech tanks
Compatible with planted shrimp tanks
Slightly faster leaf development
More vibrant green color
Improved overall health
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.
To plant Windelov successfully:
Position the rhizome flat against the chosen hardscape surface
Secure with cotton thread, fishing line, or aquarium-safe super glue gel
Ensure the rhizome remains fully exposed to water
Place in moderate-flow areas of the tank
Allow several weeks for natural rhizoid attachment
After 4–8 weeks, the plant will anchor itself permanently and any binding material can be removed.
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.
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.
Often confused with disease, these are usually plantlets forming on aging leaves and are completely normal. They can be detached and replanted.
Indicates excessive lighting or nutrient deficiency. Reduce light intensity and add liquid fertilizer.
Caused by burying the rhizome in substrate. Lift the plant and attach to hardscape immediately.
Often the result of insufficient water column nutrients. Dose comprehensive fertilizer with iron and trace elements.
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.
