Echinodorus argentinensis -easy Categ. 

Sword plants are now distributed throughout the US and Argentina. E. argentinensis is one of the larger varieties and requires sufficient space in an underwater landscape. It is well-suited to open aquaria as its sturdy emersed leaves are highly ornamental. With a little bit of patience there may even be flower shoots bearing white blossoms. Requires nutrient-rich substrate and medium to strong lighting.