Giant Lagenandra
Lagenandra ovata
A large, robust rhizomatous species from Sri Lanka. With its large, leathery green leaves, it makes a commanding background presence, enjoying stable water parameters and a rich substrate.
Water Temperature
12 - 30 °C
pH Value
6 - 7
Water type
Freshwater
Light
Medium - High
CO2
Low - High
Expected height
80 cm
Expected width
50 cm
GH
4 - 15 dGH
KH
2 - 12 dKH
Species description
Geographical Origin and Habitat: Lagenandra ovata is native to the coastal wetlands and swamps of Sri Lanka and southwestern India. It grows in freshwater or tidal brackish water habitats along the sandy or muddy shores of estuaries, rivers, and lagoons. It is an exceptionally hardy marsh plant, adapted to high water flow and capable of spending long periods emersed during the dry season as long as its roots remain wet.
Taxonomy & Genetics: Historically described as one of the first species of the genus Lagenandra, it belongs to the Araceae family. Genetically, Lagenandra ovata shows high
Color & Texture: stability, consistently producing uniform green foliage. It is considered an ancient species within Asian Araceae, with evolutionary adaptations that allow it to tolerate moderate salinity levels in its native coastal environments.
Physical Structure: This is an imposing plant, characterized by an extremely thick, woody, trunk-like creeping rhizome that can measure several centimeters in diameter. Huge, ovate leaves on long, rigid petioles emerge from this rhizome. The root system is very thick, long, and highly branched, securing the plant firmly even in unstable sandy substrates subject to tidal shifts.
Color & Texture: The leaves are a solid, semi-glossy dark green on the upper surface and slightly lighter green underneath. The leaf blade texture is thick, extremely leathery, and rigid, almost feeling like plastic or leather to the touch. This toughness protects the leaves from physical damage and large herbivorous fish, such as cichlids.
Care, breeding and tankmates
Lighting & CO2: This species does not require intense light, growing well under the shade of taller plants. However, moderate to high lighting will encourage faster growth and thicker leaf stalks. CO2 injection is not necessary for submerged cultivation, but it can help speed up its slow growth rate.
Nutrition & Substrate: Due to the plant's massive size and root system, it requires a very deep (at least 8-10 cm) and fertile substrate. It benefits greatly from the regular placement of fertilizer root tabs containing iron and macronutrients near the root zone. Liquid
Water Chemistry: It is highly tolerant of water parameters, withstanding pH levels from 6.0 to 8.0 and soft to very hard water. It can also tolerate low-level brackish conditions, making it one of the few plants suitable for low-salinity setups. The ideal temperature range is very broad, from 12 to 30 °C.
Space Management & Placement: Lagenandra ovata can reach heights of 60-80 cm and requires considerable space. It should only be placed in the background of large aquariums (300 liters or more) or grown as an emersed plant in open paludariums, where its leaves can grow out of the water to create an impressive natural display.
Pruning: Pruning consists of removing old or damaged leaves by cutting the thick petioles close to the rhizome base with strong aquascaping shears. Dividing the woody rhizome is difficult and should only be done on mature plants using a sterile, sharp cutting tool.
Risks & Diseases: It is an almost indestructible plant. The main risk is related to planting depth: if the woody rhizome is completely buried in fine substrate without water flow, it can rot. The rhizome should rest on top of the substrate, allowing only the roots to grow down into the soil to ensure oxygen access.
Geographic Origin and Distribution
Lagenandra ovata is native to the coastal wetlands and swamps of Sri Lanka and southwestern India. It grows in freshwater or tidal brackish water habitats along the sandy or muddy shores of estuaries, rivers, and lagoons. It is an exceptionally hardy marsh plant, adapted to high water flow and capable of spending long periods emersed during the dry season as long as its roots remain wet.
Origin
South and Southeast Asia
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.
Image gallery
Licensed images linked to the species or, when marked, to the closest representative taxon.
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