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Marble Queen Radican Sword (Echinodorus cordifolius 'Marble Queen')

The Marble Queen is a variegated radican sword, splashing cream and white across broad, spade-shaped green leaves — a centerpiece plant that needs no CO2, just deep substrate and steady root feeding. Being an Echinodorus cordifolius, it will try to grow emergent leaves out of the water in shallow tanks, so plan on pruning the climbers.

Care specifications

TypeRosette
DifficultyEasy
LightMedium (25–50 µmol PAR)
CO2Not needed
Fertilizer demandHigh
Growth rateMedium
Max height18 in
Spread12 in
PlacementBackground
Attaches to hardscapeNo
Snail & shrimp safeYes
Temperature70–82 °F
pH6.5–7.8
ColorVariegated
TrimmingRegular
StylesJungle, Nature

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Marble Queen Radican Sword

Marble Queen Radican Sword Pot

$9.89 In stock

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Propagation

Plantlets form on submerged flower stalks; cut them free once rooted, or divide a large crown.

Frequently asked questions

Why does my Marble Queen keep sending leaves above the water?

Emergent growth is this species' natural habit — in the wild it stands half out of the water. Cutting aerial leaves and their stalks at the base redirects energy into submerged foliage; deeper tanks and slightly less intense light also reduce the urge to climb.

Will the white variegation stay, or fade over time?

The marbling is a stable cultivar trait, but it is strongest on new leaves grown in good conditions. Weak, starved plants produce smaller, plainer leaves — keep root tabs under the crown every couple of months and the fresh growth will carry bold cream patterns.

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