The majority of stem plants sold by us are indoor aquarium-submersed grown unless otherwise stated. Aquarium stem plants are aquatic plants which grow roots that need to be planted into substrate or gravel and propagated by stem division. To propagate them, just cut the stems and replant them. Stem plants are popularly used mostly for midground to background sections of an aquarium tank. Most dutch aquascapes use stem plants of various colours including green, orange and red.