Echinodorus 'Marble Queen' care guide
Echinodorus 'Marble Queen' (Echinodorus cordifolius 'Marble Queen') — medium light, 22-28 °C, pH 6.5-7.5, no CO2.
Compiled by Aquairi from published sources · Published · Updated
Overview
Echinodorus 'Marble Queen' (Echinodorus cordifolius 'Marble Queen') is an aquatic plant of the family Alismataceae, listed in the Aquairi knowledge base as a beginner-level species. It is typically grown under medium light and without obligatory CO2 injection on nutrient-rich aquasoil. A stunning variegated sword plant with green and white marbled leaves. A medium-sized hybrid that adds unique color variation to planted aquariums without requiring intense lighting.
Taxonomy
- Family: Alismataceae
- Genus: Echinodorus
- Scientific name: Echinodorus cordifolius 'Marble Queen'
- Common synonyms: Marble Queen Sword
Habitat
Echinodorus is a genus of New-World aquatic and marsh plants (family Alismataceae) widespread from the southern United States through tropical South America; many cultivated forms are nursery hybrids selected for colour and leaf shape. In the Aquairi knowledge base, populations associated with this form are recorded from Cultivar.
Growth requirements
- Lighting: medium
- CO2: not required
- Temperature: 22-28 °C (72-82 °F)
- pH: 6.5-7.5
- GH: 3-12 °dGH
- Substrate: nutrient-rich aquasoil
- Maximum height: 30 cm
- Growth rate: medium
- Recommended placement: midground
Placement
A heavy root feeder for the midground or background. Nutrient-rich substrate, root tabs and stable parameters drive vigorous growth. Larger varieties require generous spacing. In the Aquairi knowledge base this form is recommended for the midground under medium light and without obligatory CO2 injection, using nutrient-rich aquasoil.
Propagation
Reproduces by adventitious plantlets that develop on flower stalks; once a plantlet has formed several leaves and visible roots it can be separated and planted. Documented propagation techniques for this entry include: horizontal runners, adventitious plantlets.
Common issues
Pale or yellowing new leaves usually indicate iron or other micro-nutrient deficiency; root tabs in nutrient-poor substrates correct most cases.
Propagating Echinodorus cordifolius 'Marble Queen' Sword
Overview
Echinodorus cordifolius 'Marble Queen' is a large variegated sword — a rosette plant with white-marbled leaves. The species (spade-leaf sword or creeping burhead) is a vigorous grower that can reach substantial size, so it works as a midground centerpiece or a background plant in larger tanks.
Swords are heavy root feeders. They draw nutrients from the substrate and benefit from root tabs at planting, with periodic re-dosing as the plant matures.
Propagation Method
Echinodorus propagates by division and by adventitious plantlets that develop on submerged flowering stems. When the inflorescence forms underwater, small plantlets form instead of flowers — the proliferating flower stalk produces a chain of daughter plants. A mature crown can also be split: dividing the rhizome separates the plant into rooted sections.
Step-by-Step
- Grow a healthy parent until it sends up a flower stalk; submerged, this stalk produces plantlets rather than flowers.
- Let each plantlet develop several leaves and its own roots while still attached to the stalk.
- Separate a rooted plantlet by cutting it free from the inflorescence and plant it in nutrient-rich substrate.
- For crown division, lift a mature plant and split the rhizome into sections, each with leaves and roots.
- Replant each plantlet or division with the crown at the substrate surface and add root tabs to feed the roots.
Conditions for Healthy Growth
Swords thrive in neutral to soft water and tropical to sub-tropical temperatures, with a rich substrate and good light. Most plants are grown emersed on plant farms, so newly bought stock converts to submerged growth in the aquarium. Strong light and CO2 support the most vigorous growth and flowering.
Maintenance
Remove old or melting leaves after the emersed-to-submerged transition, keep root tabs topped up, and detach plantlets once they are rooted so the parent's energy returns to its own leaves. Divide overcrowded crowns to control size in the midground.
Common Challenges
- Emersed-grown leaves may die off before underwater leaves develop, so expect some melt on a new plant.
- A depleted substrate starves this heavy root feeder — insufficient root tabs lead to weak, pale growth.
- The plant can grow large; without division it may overgrow a midground position.