Bacopa caroliniana – Wikipedia

It will grow above the water if given the chance with similar but waxy leaves and will even flower underwater occasionally, though the flowers soon rot. Emersed flowers do not produce seeds on their own, requiring cross pollination.

In the wild it grows in bogs or semi-submersed conditions, adapting well if flooded and fully submerged. It can be grown in or by ponds in warmer locales (or in shallow dishes or as a house plant if kept sufficiently damp) and will grow all year round, but is frost tender (though it will normally grow back from the roots if damaged) and appreciates light shade.

In the aquarium it needs good lighting to grow strongly but will survive in even fairly low-light levels. Prefers a clean, nutriment rich environment.^{[1][full citation needed]}