Propagating Windelov Java Fern: Rhizome Division and Plantlets

Propagate Microsorum pteropus 'Windelov', the lace Java fern, by dividing its rhizome and by the adventitious plantlets that form on its branching leaf tips.

Overview

Microsorum pteropus 'Windelov' is a cultivar of Java fern whose leaf tips split into many fine lobes, giving an intricate lace-like look. Its leaves grow 10-20 cm long. Like all Java ferns it is a hardy epiphyte that attaches to surfaces by roots from its rhizome rather than rooting in substrate, tolerating low light and a wide range of water conditions.

Propagation Method: Rhizome Division and Plantlets

Windelov can be propagated two ways. The first is rhizome division: cut the horizontal rhizome into pieces, each with several leaves and roots. The second is by adventitious plantlets - tiny Java ferns that form on the leaf tips and margins of mature foliage, quickly develop their own roots, and can attach to nearby surfaces before the parent leaf deteriorates.

Step-by-Step

For division: cut the rhizome into sections, each keeping several leaves and some roots.
For plantlets: let baby ferns mature on the leaf tips until they have their own roots, then gently detach them.
Attach divisions or plantlets to wood or rock using super-glue gel (hold about 30 seconds), string or zip ties.
Keep the rhizome exposed on top of the hardscape, never under substrate.
Return the mounts to the tank; detached plantlets can also be left to settle on their own.

Conditions for Healthy Growth

Windelov is one of the hardiest plants in the hobby. It thrives in tap water, in dim or bright light, with or without gravel, as long as the roots and rhizome stay wet. It needs no CO2, performs well even with higher fish loads, and is comfortable around 20-28 C.

Maintenance

Little maintenance is needed. Remove old or blemished leaves at the rhizome, and let new plantlets mature before detaching them. Keep gentle flow over the foliage to limit algae on the slow-growing lace tips, and allow new roots to grip the hardscape before repositioning.

Common Challenges

Rhizome rot from burying it - keep it above the substrate.
Detaching plantlets too early before they have roots.
Black blemishes or spots on older leaves; remove affected leaves and improve conditions.
Slow establishment, which is normal for this slow-growing fern.