Asian Bolbitis care guide
Asian Bolbitis (Bolbitis heteroclita 'Difformis') — low light, 22-27 °C, pH 5.5-7.5, no CO2.
Compiled by Aquairi from published sources · Published · Updated
Overview
Asian Bolbitis (Bolbitis heteroclita 'Difformis') is an aquatic plant of the family Dryopteridaceae, listed in the Aquairi knowledge base as an intermediate-level species. It is typically grown under low light and without obligatory CO2 injection on any substrate. Compact Asian Bolbitis with deeply lobed bright green fronds. Smaller and easier than the African heudelotii; works well in shaded mid-to-foreground attached to wood.
Taxonomy
- Family: Dryopteridaceae
- Genus: Bolbitis
- Scientific name: Bolbitis heteroclita 'Difformis'
Habitat
Bolbitis is a genus of paleotropical ferns (Dryopteridaceae) growing on rocks and wood in fast-flowing streams of Africa, Asia and the Pacific. Most species require well-oxygenated, soft to moderately hard water. In the Aquairi knowledge base, populations associated with this form are recorded from Asia.
Growth requirements
- Lighting: low
- CO2: not required
- Temperature: 22-27 °C (72-81 °F)
- pH: 5.5-7.5
- GH: 2-12 °dGH
- Substrate: any
- Maximum height: 20 cm
- Growth rate: slow
- Recommended placement: midground
Placement
An epiphyte attached to wood or rock; the rhizome must not be buried in substrate. Moderate current improves leaf health and limits algae on the slow-growing fronds. In the Aquairi knowledge base this form is recommended for the midground under low light and without obligatory CO2 injection, using any substrate.
Propagation
Multiplies by rhizome division; sections with at least one frond and a small cluster of roots re-attach reliably to hardscape. Documented propagation techniques for this entry include: rhizome-division.
Common issues
Slow growth makes Bolbitis prone to algae overgrowth; lower light and shading by faster plants protect the fronds.
Propagating Asian Bolbitis (Bolbitis heteroclita 'Difformis')
Overview
Asian Bolbitis (Bolbitis heteroclita 'Difformis') is a compact epiphytic fern that naturally grows on wood and rock surfaces rather than in substrate. It is propagated through division of its creeping rhizome, the structure from which its fronds and delicate roots arise.
It is a slow grower, so multiplication is gradual. Native across tropical and subtropical Asia and the western Pacific, it stays smaller and is generally easier to keep than the larger African Bolbitis.
Propagation Method (Rhizome Division)
The reliable aquarium method is rhizome division. The horizontal rhizome is cut into sections, each retaining several fronds and a portion of roots, and each section then grows into an independent plant. As with all epiphytic ferns, the roots are simply tied or attached to driftwood or rocks.
- Rhizome division — split the creeping rhizome into pieces with fronds and roots.
- Attachment — tie or glue each piece to wood or rock so the roots can grip.
Step-by-Step
- Lift the mother plant off its wood or rock and rinse away loose debris.
- Cut the rhizome into sections, each carrying several fronds and a tuft of roots.
- Tie each section to driftwood or stone with cotton thread or fishing line, or use a dab of aquarium glue.
- Keep the rhizome fully exposed above the surface; only the roots should contact the hardscape.
- Set it in a shaded spot with gentle flow and let new fronds form before disturbing it.
Conditions for Healthy Growth
This fern prefers soft, slightly acidic water, ideally around pH 6.0-7.0, with a gentle current rather than strong flow. Low light and no added CO2 suit it. Weekly water changes of roughly 25-75% keep conditions stable for its delicate roots.
Maintenance
Once attached, leave the plant in place so its slow growth is not interrupted. Remove cotton thread or wait for glue to be overgrown by roots, and trim away any old or melted fronds at the rhizome.
Common Challenges
- Rotting rhizome — caused by burying it; keep it exposed on hardscape.
- Very slow recovery — normal; avoid frequent moves and over-division.
- Frond melt in poor water — maintain soft, slightly acidic water and regular changes.