Echinodorus uruguayensis is a thin-leafed species of sword plant. Given sufficient space, Uruguay swords can grow quite massive, being among the largest of Echinodorus species.

Swords (Genus Echinodorus) are a beloved group of aquarium plants with diverse array of cultivars available. Most have similar care requirements; low light is tolerated but higher light is preferred, and regular fertilization will produce more lush and colourful plants. Swords rarely produce new plants/pups, and instead will develop large, thick rosettes of leaves. Some initial dieback of the leaves is to be expected while they adjust to life underwater; like most aquarium plants, swords are farmed on land in the far East.