How to Prune canna 'Striata'?
Deadhead spent flowers to promote continued flowering. Leave to die back in autumn

canna 'Striata' · Canna 'Striata'
As a patio plant grow in pots of loamless compost in a sheltered site in full sun. Plants can also be planted into a sunny border. Water freely and apply a high potassium feed every 2-3 weeks in the growing season. Lift the rhizomes in autumn when frost blackens the foliage. Store over winter in barely moist compost in frost-free conditions. See canna cultivation for further information
Deadhead spent flowers to promote continued flowering. Leave to die back in autumn