Plantlet Method
Old java fern leaves develop baby plantlets along the edges. These appear as small fern-like growths with tiny roots.
Wait for plantlets to reach 2-3cm. Break off by gently pulling. Attach to rocks or wood.
Rhizome Division
Every 6-12 months, the rhizome grows long with multiple root clusters. Cut rhizome into sections using sharp clean scissors.
Each section needs 2-3 leaves and its own root cluster. Reattach to hardscape.
Attachment Rules
Same as anubias — rhizome must stay above substrate. Glue or tie to rocks/wood.
Never bury the rhizome. Rotten rhizomes destroy the whole plant.
Varieties
Regular java fern, Windelov (frilly edges), needle leaf (narrow leaves), trident (trident-shape leaves). All propagate the same way.
Mix varieties for visual interest. All tolerate same low-tech conditions.