These plants are totally aquatic, requiring intense light and a fairly rich soil.
They are sensitive to any deficiency in iron. The water must be slightly alkaline
and moderately hard.
The yellow-flowered heteranthera can be reproduced with cuttings, a process that
is facilitated by adventitious roots on the stem. The stem is quite fine and can
float on the surface of the water. Size: 40 cm.
The stargrass can live totally submerged. It multiplies through cuttings of the
side shoots; it can also grow as a creeper. Size: 30 cm.