water canna 'Ra'

In summer, water cannas (often bred from Canna glauca) can be placed in containers in ponds with no more than 15cm (6in) of water over the roots. They are also suitable for well-watered borders or conservatories where potted plants can be stood in deep saucers of water. Before autumn frosts, bring plants from outdoors into a frost-free greenhouse or conservatory. Keep the pots moist but not saturated. In April, increase temperatures and plant the sprouted plants out in late May when the risk of frost has passed

Deadhead regularly to promote flowering

Propagate by seed or division

Glasshouse red spider mite, aphids, slugs and caterpillars may occur

Canna can be infected with a virus