Cryptocoryne affinis

Propagating the Malaysian Water Trumpet is a relatively straightforward process, though it requires patience due to the plant's moderate growth speed. The primary method of reproduction in an aquarium setting is asexual, occurring through the formation of runners from its creeping rhizome. These runners extend through the substrate and eventually develop into new, independent daughter plants. Sexual reproduction via the development of a flower-like spathe is exceptionally rare in fully submerged conditions and is not a practical method for hobbyists.

For successful propagation, allow the parent plant to become well-established in a nutrient-rich substrate. Healthy, mature plants are more likely to produce runners. Once a daughter plant has formed along a runner and developed several of its own leaves and a small root system, it can be separated. Using sterile aquascaping scissors or a sharp blade, carefully snip the rhizome connecting it to the parent plant. Gently uproot the new plantlet, taking care not to damage its delicate roots. Replant the division in the desired location, ensuring the crown—the point where the leaves emerge from the rhizome—is not buried beneath the substrate, as this can lead to rot.

Environmental factors are key to encouraging propagation and ensuring the survival of new plantlets. Stable water parameters, moderate lighting, and a nutrient-dense substrate or the use of root tabs will provide the energy needed for the plant to spread. Be prepared for the possibility of a minor 'melt' after separating and replanting, as the new plantlet adjusts to its location. As long as the small rhizome is healthy and firm, it will typically recover and produce new leaf growth within a few weeks.