Vallisneria Nana (Vallisneria nana) Care Guide
Compact narrow-leaf Vallisneria native to northern Australia. Forms graceful ribbon-like meadows in midground positions and propagates readily by runners.
Overview
Vallisneria nana is a compact aquatic plant in the family Hydrocharitaceae, distinguished by very narrow dark-green ribbon-like leaves that stay shorter than other Vallisneria species. It is well suited to midground positions where taller Vallisneria would be too dominant.
Taxonomy
- Family: Hydrocharitaceae
- Genus: Vallisneria
- Scientific name: Vallisneria nana
Habitat
Native to northern Australia, with related occurrences reported in the Philippines, New Guinea and New Caledonia. The plant grows in slow-moving rivers, lagoons and streams, where it can form dense colonies in shallow, moderately lit water.
Growth requirements
- Lighting: medium
- CO2: not required
- Temperature: 22-28 °C
- pH: 6.5-8.0
- GH: 4-18 °dGH
- Substrate: sand or gravel; benefits from root tabs
- Maximum height: about 30 cm
- Growth rate: medium
Placement
A midground plant in larger tanks and a background plant in nano setups. The crown should sit just above the substrate when planting; burying it leads to rot. Hard, slightly alkaline water with sufficient calcium suits the species particularly well.
Propagation
Reproduces vegetatively by runners. New plants emerge along stolons that spread laterally through the substrate; once they have several leaves and visible roots they can be cut from the parent and replanted, or left to form a continuous meadow.
Common issues
Yellow tips and stunted growth often follow planting too deeply or insufficient iron and trace elements. Periodic trimming with a sharp blade and addition of root tabs keep the colony healthy and dense.