INTRODUCTION
Microsorum pteropus ‘Windelov’ is perhaps the most distinct and recognizable variety of Java Fern in the world. Named after the founder of Tropica, Holger Windeløv, this patented cultivar is famous for its unique finely branched leaf tips. While the base of the leaf is smooth and broad, the ends explode into a complex, lacy crest that resembles a miniature green staghorn or a bunch of parsley.
It is a hardy, slow-growing epiphyte that adds an incredible amount of “visual noise” and intricate texture to an aquascape. Because of its bushy growth habit, it is one of the best plants for creating dense, lush thickets in the midground without the need for high-maintenance trimming.
QUICK GUIDE
| Feature | Requirement / Detail |
| Difficulty | Very Easy / Beginner |
| Growth Rate | Slow |
| Placement | Midground / Focal Point (Attached to hardscape) |
| Light Requirements | Low to Medium |
| Temperature | 20°C – 28°C (68°F – 82°F) |
| pH Range | 6.0 – 8.0 |
| CO2 Requirement | Optional |
IN THE WILD
As a specialized cultivar, ‘Windelov’ was developed for the aquarium trade, but its parentage is rooted in the tropical regions of Southeast Asia.
- Ancestral Resilience: The original Java Fern species grows on rocks and wood in shaded forest streams. ‘Windelov’ inherits this “rheophytic” ability, meaning it is perfectly adapted to living in areas with constant water movement.
- Shade Adaptation: In nature, these ferns grow under the dense canopy of the jungle. This makes ‘Windelov’ one of the best plants for aquariums with lower lighting or for placing in the shadows of larger “mother” plants.
IN THE AQUARIUM
‘Windelov’ is a “utility” plant—it is as functional as it is beautiful.
- The Rhizome Rule: Like all Microsorum species, the rhizome must never be buried in the substrate. If the thick horizontal “trunk” is covered by sand or gravel, it will eventually rot. It is best attached to driftwood, rocks, or even filter intakes.
- Bushy Growth: Because of the branched tips, ‘Windelov’ appears much “fuller” than standard Java Fern. It is excellent for hiding equipment like heaters or sponge filters.
- Water Parameters: It is extremely adaptable. It can thrive in a wide range of water conditions, from soft and acidic to hard and alkaline. It is also one of the few plants that can tolerate slightly brackish water.
- Flow Enthusiast: It thrives in moderate flow. The water movement helps keep the delicate, branched tips clean of debris and algae.
PROPAGATION
Propagating ‘Windelov’ is straightforward and follows the same methods as other Java Ferns:
- Rhizome Division: Simply cut the rhizome into smaller pieces using sharp shears. Make sure each section has at least 3 leaves and some healthy black roots.
- Adventitious Plantlets: ‘Windelov’ frequently produces baby plants on the edges of its leaves. Once these “babies” have developed roots and a small crest of their own, they can be gently detached and moved.
- Low Stress: Since it grows slowly, avoid over-propagating a small clump. Let the plant reach a substantial size before dividing to ensure both halves have enough energy to continue growing.
MY OBSERVATIONS
‘Windelov’ is my go-to recommendation for anyone struggling with “flat” looking aquascapes. The branching tips create so many tiny shadows and highlights that it instantly adds a sense of maturity to the tank.
Pro-Tip: Over time, the very tips of the branched leaves can collect “dust” (detritus). During your weekly water change, gently shake the plant or use a turkey baster to blow off any settled waste. This keeps the intricate lace-like tips looking bright green and prevents algae from taking hold in the crevices.
BUYING OPTIONS
We provide Microsorum pteropus ‘Windelov’ in two formats to help you achieve a lush, textured look:
1. Tissue Culture Cups
The cleanest way to introduce this lacy fern to your aquarium.
- Biosecure Guarantee: 100% free of snails, duckweed, and algae.
- Precision Scaping: You get multiple small, healthy plantlets that can be separated and glued into the smallest crevices of your driftwood or dragon stone.
- Best for: Nano tanks and detail-oriented hobbyists.
2. Living Wall Mats
For an instant “Lace Forest” effect.
- Maximum Density: These mats feature a large number of established rhizomes that have already grown together to form a thick, bushy carpet of ‘Windelov’.
- Versatile Placement: You can lean the mat against the back glass to create a “living wall,” or place it on top of a large flat rock for an immediate focal point.
- Best for: Large aquariums and those who want a fully mature, “branched” look on day one.
