Cultivation
Needs a deep rich substrate and good light. Will withstand sub-tropical - tropical temperatures. A strong grower, too big for the average aquarium, the leaves soon growing out of the water. In the wild it grows in sticky mud along rivers. Rataj reports hybrids with E. grandiflorus and E. longiscapus which have mixed features. Supplement with iron and CO2 if possible. Seems to prefer soft to hard water.
Seems to bloom best in cooler water and in short-day conditions.
Apparently rarely found in the trade, the majority (if not all) specimens being offered being E. palaefolius.
Read more about this topic: Echinodorus Argentinensis
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