Commonly used as an aquatic herb, Watercress will grow in a terrarium in a mix of peat and sphagnum moss with a little sand.

Alternatively you can pot it and submerge the pot in a pond.

They do well in pots if they are allowed to sit in a little tray of water.

Either way, it is convenient to harvest the stems and leaves and no other preparation is necessary.

As a food, Watercress, used either in salads, soups or sandwiches, it acts as a blood cleanser, diuretic and expectorant.