Lobelia cardinalisLobelia cardinalis grows wild in Northern America. In the nursery this plant is cultivated in marshy conditions, forming dark green leaves which are purple underneath. In aquariums the leaves turn a beautiful shade of light green, with stems 10 30 cm tall and 5 10 cm wide. Widely used in Dutch aquariums in so called "plant streets''. In open aquariums it grows above the water surface, where it forms very beautiful scarlet flowers and the leaves regain