Giant Lagenandra (Lagenandra ovata)

Species description

Care, breeding and tankmates

Plant profile

Placement

Background

Due to its significant size, it is exclusively suited for the background of large aquariums or as a prominent specimen in open-top tanks and paludariums. In smaller setups, it will quickly outgrow the space and shade other plants. It looks spectacular when allowed to grow emersed out of the water.

Botanical form

Rhizome

This species is characterized by its impressively large, tough, and elongated ovate leaves that arise from a formidable rhizome. The leaves are typically solid dark green and possess a somewhat leathery texture. Its imposing size and structure provide a highly natural, swamp-like aesthetic to large setups.

Growth

Medium

It exhibits a slow to moderate growth rate, focusing its energy on developing substantial leaves and a thick, creeping rhizome. The slow growth rate means it requires very little regular maintenance. However, once established in optimal conditions, it can become quite expansive.

Substrate

High

Lagenandra ovata is a large and imposing plant that necessitates a deep, nutrient-laden substrate to support its significant mass and slow, steady growth. Its thick roots require an enriched aqua soil environment to effectively draw up the necessary minerals for its expansive leaves. It is crucial to leave the robust rhizome exposed above the substrate surface to prevent rot, while ensuring the roots have ample depth to stabilize the heavy plant structure.

Column fertilization

Optional

While it draws most of its nutrients from the substrate, column fertilization provides necessary micronutrients that prevent leaf malformations. Regular dosing of a complete liquid fertilizer supports the overall vigor of the plant, especially in setups with high light and CO2.

Root fertilization

Required

A deep, nutrient-rich substrate is essential for Lagenandra ovata. It produces a massive, deep-reaching root system designed to extract heavy nutrients from the soil. The generous application of root tabs or a thick layer of aquasoil will significantly boost its growth and health.

Trimming

Occasional

Trimming involves occasionally removing older, outer leaves that have started to yellow or gather algae. It is important to cut the thick petiole as close to the rhizome as possible using heavy-duty aquascaping scissors. Avoid disturbing the massive root system unless completely necessary.

Propagation

Division

Propagation is straightforward but requires patience; it involves dividing the thick rhizome. Ensure that the severed section of the rhizome is substantial and has healthy leaves and roots attached. Plant the division in deep substrate, being careful not to bury the rhizome completely.

Sensitivity

low

Lagenandra ovata is an exceptionally hardy plant that tolerates a wide range of water parameters and lighting conditions. It is less prone to 'melting' than many other aroids, making it a very durable choice. It adapts well to both submerged and emersed conditions without much difficulty.

Layout role

Background

Its layout role is typically that of a massive background specimen in large aquariums or a focal point in paludariums. It provides a wild, untamed jungle look and offers excellent resting places for large fish. It is unparalleled for creating dramatic, towering green structures in the aquascape.