Alternanthera sessilis is easily located in various tropical and subtropical regions of the earth, usually in areas that are moist or wet, such as in marshes, on roadsides and in planted gardens. A dark red form of this species is very popular and heavily used as decorative plant, and it is also often advertised as aquarium plant. However, when compared to the Alternanthera reineckii, it is not well suited to be submersed under water. When cultivated as an aquatic plant, it develops very long internodes that have small leaves and a very high number of roots that become situated high on the plant.
Cultivation of the A. sessilis underwater is very simple. This impressively dark red plant is also suitable for paludaria or terraria.