Lagenandra Keralensis care guide
Lagenandra Keralensis (Lagenandra keralensis) — low light, 22-28 °C, pH 6-7, no CO2.
Compiled by Aquairi from published sources · Published · Updated
Overview
Lagenandra Keralensis (Lagenandra keralensis) is a narrow-leaved plant of the family Araceae, grown as an aquarium plant. A rare and compact species from Kerala, India. Produces narrow, elongated leaves with a subtle olive-green coloration. Very slow-growing and undemanding, it does well in low-light setups. An uncommon choice that adds a unique texture to planted aquariums.
Taxonomy
- Family: Araceae
- Genus: Lagenandra
- Scientific name: Lagenandra keralensis
- Common synonyms: Kerala Lagenandra
Habitat
Lagenandra is a genus of marsh aroids from South Asia, especially Sri Lanka and southern India, growing along the margins of slow streams and seasonally flooded banks in soft to moderately hard water. In the Aquairi knowledge base this species is recorded from India.
Growth requirements
- Lighting: low
- CO2: not required
- Temperature: 22-28 °C (72-82 °F)
- pH: 6-7
- GH: 2-10 °dGH
- Substrate: nutrient-rich aquasoil
- Maximum height: 10 cm
- Growth rate: slow
- Nutrient demand: low
- Recommended placement: midground
Placement
In aquascapes this plant suits the midground. It is planted with the rhizome at or just above the substrate surface; the thick rhizome creeps slowly, so the plant suits the midground and grows best with steady nutrients.
Propagation
This species is multiplied by rhizome division; cut sections each bearing leaves and roots are replanted, and the genus can also produce side shoots.
Common issues
Like Cryptocoryne, abrupt parameter changes can cause leaves to melt while the rhizome survives; the cut latex-bearing sap can also irritate skin, so gloves are advisable when dividing.
Propagating Lagenandra keralensis: Rhizome Division and Runners
Overview
Lagenandra keralensis is a member of the aroid family Araceae, endemic to the Indian subcontinent and rare in cultivation despite growing interest in the aquascaping hobby. Like other Lagenandra, it grows from a thick creeping rhizome and can develop both submersed and emersed leaves, with simple blades ranging from ovate to almost linear. It is a slow, undemanding species, so all propagation here is vegetative — driven by the rhizome rather than by cuttings.
Propagation Method (Rhizome Division)
The thick creeping rhizome is what enables vegetative reproduction through division. As the rhizome creeps it produces new shoots and runners along its length; each established section that carries its own leaves and roots can become an independent plant. Lagenandra differs from the related Cryptocoryne in having involute leaf vernation, but it shares the same crypt-like habit of melting after disturbance and then regrowing.
Step-by-Step
- Lift or expose a healthy stretch of the creeping rhizome that bears several leaves and a developed root system.
- Identify a runner or branch point where a side shoot has formed its own roots.
- Cut the rhizome cleanly between two leaf groups so each division keeps at least a few leaves and its own roots.
- Replant each division into a nutrient-rich substrate, keeping the growing tip of the rhizome above the soil.
- Expect older leaves to melt; leave the rhizome undisturbed and new emersible foliage will regrow from it.
Conditions for Healthy Growth
- Temperature 22-28°C, soft to moderately hard water (GH 2-10) and pH around 6-7.
- Low lighting suits it; CO2 is not required for this slow-growing species.
- A nutrient-rich substrate supports the root-feeding rhizome.
- Stable, mature water reduces melting and speeds recovery.
Maintenance
Once divisions take hold, maintenance is minimal. Because it is very slow-growing there is no trimming schedule — simply remove fully melted or decayed leaves so they do not foul the water, and let the rhizome creep and produce new runners at its own pace before dividing again.