Watercress (Nasturtium officinale) is a good British native water conditioner which has white flowers from June to September. It is a particular favourite of newts as they like to lay their eggs in the folded leaves. Plant in a sunny position. Looks attractive at pond edges and growing on the water surface

Height: 20-30cm

Planting position: Pond marginal shelf up to 10cm deep or very wet soil

Form: 9cm (o.5 litre) in a solid pot -please select size below

Recommended basket size min./ideal: 2 litre round/3.5 litre round

(Recommended basket sizes are for potting up 9cm (0.5 litre) plants only as these are supplied in solid pots.  Larger sized plants are already in aquatic baskets so can go straight in the pond, however they may need potting up or splitting at some point)