Canna brasiliensis

Grow in a sheltered site in fertile soil in full sun, planting in early summer once frosts have passed. Water freely in dry weather and apply a high-potassium fertiliser monthly. Lift the rhizomes in autumn when frost blackens the foliage. Store over winter in barely moist, peat-free potting mix or leaf mould in frost-free conditions. In mild areas leave in the ground but cover with a dry mulch. See canna cultivation

Remove dead flowers individually to promote continued flowering. Leave to die back in autumn

Propagate by seed, or by division in early spring

May be susceptible to glasshouse red spider mite, slugs and caterpillars

May be susceptible to canna viruses