Limnophila aquatica

Limnophila aquatica is distributed across South and Southeast Asia, inhabiting slow-moving rivers, ponds, and marshes where it grows as a robust emergent or submerged macrophyte. Submerged, it produces whorls of 10–12 pinnately divided leaves around each node, creating a full, globe-like silhouette that is immediately recognisable among aquarium plants. The bright green colour and feathery texture make it one of the most dramatic background plants available in the hobby. It is closely related to and sometimes confused with Limnophila sessiliflora, but it grows notably larger and requires stronger light. In the aquarium, Limnophila aquatica is best reserved for larger tanks of 60 litres and above where its size can be fully appreciated. It is a moderate-to-demanding plant that benefits significantly from CO2 injection and a thorough fertilisation regimen. Without sufficient light, the lower whorls die off, leaving bare stems. It is a favourite in Dutch-style aquascaping where its bold form serves as a prominent focal point or column element, and it also pairs beautifully with fine-leaved foreground plants that contrast its dense, spherical whorls.

Placement Reserved for the background of tanks 60 cm or longer. Plant single stems or pairs spaced 5 cm apart to allow the full whorl structure to develop without crowding.

Lighting Requires moderate-to-high lighting (50–80 PAR) to maintain full whorl development. Under insufficient light, lower leaves die off rapidly, leaving unattractive bare stems.

CO2 & Fertilisation CO2 injection at 20–30 ppm is strongly recommended for healthy, dense growth. Regular macronutrient and micronutrient dosing is essential. Potassium and iron deficiencies are common and cause leaf yellowing.

Propagation Side shoots can be removed and planted separately. Top cuttings at 10 cm root efficiently in warm water. The plant can also propagate from individual whorls placed on a substrate in shallow tanks.

Trimming Trim before the plant reaches the water surface to prevent sprawling. Cut just above a node whorl; new stems branch from this point. Replant the healthy top sections and remove the bare lower stem.