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Echinodorus cordifolius 'Tropica Marble Queen'

Echinodorus cordifolius 'Tropica Marble Queen'

Echinodorus 'Tropica Marble Queen' is an elite, highly demanding cultivar famous for its breathtakingly massive, wildly variegated white and green heart-shaped leaves.

Taxonomy
Class:Liliopsida
Order:Alismatales
Family:Alismataceae
Genus:Aquarius
Species:Echinodorus cordifolius 'Tropica Marble Queen'

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Water Temperature

5 - 30 °C

pH Value

5 - 8

Water type

Freshwater

Light

Da media ad alta

CO2

Medium

Expected height

100 cm

Expected width

50 cm

GH

4 - 20 dGH

KH

0 - 21 dKH

Species description

Geographical Origin and Habitat: This specific, highly unstable botanical variant does not exist in the wild. Echinodorus cordifolius "Tropica Marble Queen" is a legendary, patented commercial cultivar isolated and stabilized by the world-famous Tropica nurseries in Denmark. Derived from the colossal, wild-type Radican Sword, this specific mutation was selected purely for its striking, aggressively variegated foliage. In the aquarium, it behaves precisely like its wild ancestor, acting as a massive, deeply rooted, fiercely fast-growing amphibious rosette plant.
Taxonomy & Genetics: Scientifically classified within the Alismataceae family, the "Marble Queen" is an elite, highly prized variegated cultivar. Taxonomically, it is biologically identical to E. cordifolius in structure and size. Genetically, however, it is defined by a massive, highly unstable viral-like genetic mutation (chimera) that randomly blocks the production of green chlorophyll across large sections of the leaf. This genetic defect forces the plant to produce massive leaves that are violently splattered, streaked, and marbled with pure white and pale yellow.
Physical Structure: The architectural structure of the "Marble Queen" is overwhelmingly dominant, violently fast-growing, and towering. It is a gigantic rosette plant completely lacking vertical stems. The foundation is a massive, tuberous subterranean rhizome that deploys an aggressive, deep-reaching root system. The leaves emerge directly from the crown on exceptionally thick, long petioles designed to rapidly push the leaf upward. The foliage is perfectly heart-shaped (cordate) to broadly ovate, monstrously huge (up to 40 cm), and perfectly flat.
Color & Texture: The coloration is absolutely explosive, highly chaotic, and deeply unstable. Grown submerged under intense lighting, the massive, broad leaves are a chaotic, swirling canvas of bright apple-green violently splashed, marbled, and speckled with stark, blinding pure white, cream, and pale yellow. No two leaves are ever identically patterned. The texture is intensely smooth, highly rigid, and heavily leathery. However, the white (chlorophyll-lacking) sections of the leaf are noticeably thinner and much more fragile than the green sections.

Care, breeding and tankmates

Lighting & CO2: It is an incredibly demanding, highly difficult titan. Because the massive white sections of the leaf possess zero chlorophyll, the plant is functionally crippled and cannot photosynthesize efficiently. To sustain its towering growth, blasting, extreme-intensity LED lighting is absolutely mandatory. In low light, the plant will panic, abandon the white marbling, and revert to a solid, muddy green to survive. Pressurized CO2 is strictly required to force the plant to maintain its heavy white variegation and prevent melting.
Nutrition & Substrate: As a crippled, colossal Amazon Sword, the "Marble Queen" is a terrifyingly aggressive, obligate root feeder. Its massive root system strictly demands a very deep (minimum 10 cm / 4 inches), heavily nutrient-dense substrate. It absolutely demands premium aquasoil heavily enriched with iron and macro-nutrient root tabs. If starved of root nutrients, the delicate white sections of the marbled leaves will instantly become transparent, rot, and dissolve into massive holes, ruining the entire aesthetic of the plant.
Water Chemistry: Originating from highly stabilized nursery conditions, it is practically invincible regarding standard water parameters, provided lighting and nutrients are extreme. It thrives effortlessly in heated tropical aquariums (22-28°C). It is exceptionally adaptable, tolerating both soft, acidic water and rock-hard, highly alkaline tap water (pH 6.0 - 8.5). The single most critical environmental requirement is intense, continuous nutrient supplementation and extreme light. It prefers slow to moderate water flow to protect its fragile white leaves.
Space Management & Placement: Due to its absolute monstrous size (capable of reaching 60-100 cm in height) and visually chaotic nature, this plant is strictly reserved as an extreme background centerpiece for very large, open-top aquariums (minimum 300 liters). It MUST be planted singularly. If you allow it to mature, it will violently breach the surface, producing massive, rigid, white-marbled emerged leaves that will aggressively block out all light to the tank below while sending out massive flower stalks.
Pruning: Pruning is a constant, brutal, and highly necessary procedure. Because the plant naturally wants to breach the surface, you must constantly prune off the taller, mature leaves before they reach the air. Furthermore, if the plant ever throws a leaf that is 100% solid green (reverting), you MUST immediately slice that green leaf off at the absolute base of the crown. If you allow the solid green leaves to remain, they will out-compete the weaker marbled leaves, and the entire plant will permanently revert to solid green.
Risks & Diseases: The absolute greatest threat to the "Marble Queen" is genetic reversion and necrosis of the white tissue. Because the white, marbled sections of the leaf lack chlorophyll, they are incredibly weak. If light drops or nutrients run out, these white sections will instantly rot and form massive holes in the leaves. Secondly, the plant constantly tries to cure its own mutation; if it produces a solid green leaf and you fail to cut it off, the plant will permanently lose its marbled pattern forever.

Geographic Origin and Distribution

This specific, highly unstable botanical variant does not exist in the wild. Echinodorus cordifolius "Tropica Marble Queen" is a legendary, patented commercial cultivar isolated and stabilized by the world-famous Tropica nurseries in Denmark. Derived from the colossal, wild-type Radican Sword, this specific mutation was selected purely for its striking, aggressively variegated foliage. In the aquarium, it behaves precisely like its wild ancestor, acting as a massive, deeply rooted, fiercely fast-growing amphibious rosette plant.

Origin

Selective breeding and cultivars
Varietà da Selezione / Cultivar

Plant profile

Placement
Background
Due to its large size, this plant is best suited for the midground or background of the aquarium. It serves as an excellent focal point when given enough space to spread its leaves. Ensure it is not heavily shaded by other plants to promote optimal growth.
Botanical form
Rosette
It forms a classic rosette structure with sturdy leaves growing from a central crown. The foliage displays a striking marbled green and white appearance that adds wonderful texture to the aquascape. Its root system is extensive and anchors the plant firmly in the substrate.
Growth
VERY_FAST
The growth rate is generally moderate under standard aquarium conditions. With the addition of CO2 injection and high lighting, it will produce new leaves much faster. It steadily establishes itself over a few weeks after planting.
Substrate
High
As a heavy root feeder, Echinodorus cordifolius 'Tropica Marble Queen' demands a deep, nutrient-rich substrate to support its extensive and robust root system. A minimum substrate depth of 5 to 7 centimeters is highly recommended to allow proper root anchoring and expansion. While it can survive in inert gravel or sand if heavily supplemented with root tabs, a dedicated aquasoil will provide the optimal conditions for vigorous growth and vibrant foliage. Ensuring continuous nutrient availability at the root zone is critical to prevent nutrient deficiencies.
Column fertilization
Recommended
Liquid fertilizers provide a beneficial supplement of trace elements directly to the leaves. Regular dosing of a complete fertilizer helps maintain the fresh marbled green and white appearance of the foliage. However, column feeding should be combined with root feeding for best results.
Root fertilization
Required
As a heavy root feeder, Echinodorus cordifolius 'Tropica Marble Queen' heavily relies on a fertile substrate. Inserting root tabs near the base every few months is crucial for its long-term health. A nutrient-rich aquasoil provides an ideal foundation for its expansive roots.
Trimming
Regular
Maintenance involves removing the oldest outer leaves by cutting them close to the base. This prevents the plant from becoming too bulky and directs energy into fresh inner growth. Regular pruning keeps the rosette looking tidy and vibrant.
Propagation
Rhizome division
Propagation naturally occurs via adventitious plantlets that form on long flower stalks. Once the small plantlets develop their own roots and leaves, they can be safely detached. They should then be replanted directly into a nutrient-rich substrate.
Sensitivity
HIGH
This species is generally very hardy and adapts well to a wide range of water parameters. It prefers moderate to high lighting to maintain its specific marbled green and white hues. Sudden extreme changes in water chemistry should be avoided to prevent leaf melt.
Layout role
Background, accent
Its large structure makes it a perfect centerpiece or solitary accent in planted layouts. The marbled green and white foliage provides a beautiful contrast against different textures and hardscape materials. It brings a natural, wild feel to both nature aquariums and biotopes.

Image gallery

Licensed images linked to the species or, when marked, to the closest representative taxon.

Related species

Recommendations grouped by close relatives, companion choices, and similar care.

Variants and close relatives

Same atlas type, nearby scientific identity, genus, or family.

Echinodorus cordifolius ''ovalis''

Echinodorus cordifolius ''ovalis''

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Echinodorus cordifolius 'Mini'

Echinodorus cordifolius 'Mini'

Echinodorus cordifolius 'Mini'

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Echinodorus cordifolius

Echinodorus cordifolius

Aquarius cordifolius

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Echinodorus subalatus

Echinodorus subalatus

Aquarius subulatus

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Echinodorus decumbens

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Aquarius decumbens

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Echinodorus grandiflorus

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Aquarius grandiflorus

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Echinodorus grisebachii 'Amazonicus'

Echinodorus grisebachii 'Amazonicus'

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Echinodorus grisebachii 'Bleherae'

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Echinodorus grisebachii 'Parviflorus'

Echinodorus grisebachii 'Parviflorus'

Echinodorus grisebachii 'Parviflorus'

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Echinodorus horizontalis

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Aquarius horizontalis

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Echinodorus major

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Aquarius major

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Echinodorus osiris

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Aquarius uruguayensis

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Echinodorus palifolius

Echinodorus palifolius

Aquarius palifolius

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Echinodorus paniculatus

Echinodorus paniculatus

Aquarius paniculatus

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Large-leaf Sword

Large-leaf Sword

Aquarius macrophyllus

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Amazon Sword

Amazon Sword

Aquarius grisebachii

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Recommended companions

Compatible cards from coherent ecosystems with matching parameters.

Echinodorus × barthii

Echinodorus × barthii

Echinodorus barthii

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Echinodorus berteroi

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Echinodorus berteroi

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Orange dwarf crayfish (CPO)
Invertebrate

Orange dwarf crayfish (CPO)

Cambarellus patzcuarensis "Orange"

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Echinodorus uruguayensis

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Ramshorn Snail
Invertebrate

Ramshorn Snail

Planorbella duryi

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Anubias barteri var. nana 'Golden Heart'

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Anubias barteri var. nana 'Petite' ('Bonsai')

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Acorus gramineus

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Cherry Shrimp
Invertebrate

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Neocaridina davidi

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Anubias "nangi"

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Anubias barteri var. angustifolia

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Anubias barteri var. barteri

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Anubias barteri var. barteri

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Anubias barteri var. caladiifolia

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Anubias barteri var. coffeifolia

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Anubias barteri var. glabra

Anubias barteri var. glabra

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Anubias gilletii

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Similar care

Cards with similar requirements, difficulty, habitat, and husbandry profile.

Echinodorus 'Brauner Elefant'

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Echinodorus 'Rosé'

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Echinodorus Dschungelstar Nr. 2 'Kleiner Bär'

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Echinodorus 'Altlandsberg'

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Echinodorus 'Aquartica'

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Echinodorus 'Aflame'

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Echinodorus 'Großer Bär'

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Echinodorus 'Ozelot Grün'

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Echinodorus 'Red Devil'

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Echinodorus 'Rote Zora'

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Echinodorus 'Roter Oktober'

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Echinodorus 'Roter Pirat'

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Echinodorus 'Apart'

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Echinodorus 'Aseng'

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Echinodorus 'Bambi'

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Echinodorus 'Dark Beauty'

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Last updated: 06/30/2026
Echinodorus cordifolius 'Tropica Marble Queen' Care Guide & Tank Setup | Atlarium