Hibiscus syriacus 'Oiseau Bleu' syn.Bluebird - Tree Hollyhock

A late flowering shrub that comes into its own when others are looking tired, this has large, trumpet-shaped, bright blue flowers 8cm (3in) across with red centres from late summer to mid-autumn.  It is best planted in a sunny spot as it does need a long, hot summer to flower well. 2ltr