Melianthus major 'Antonow's Blue'

RHS

A large, evergreen sub-shrub to 2.5m with a few, more-or-less upright stems from the base with very large, divided, blue-grey-green leaves with about 15 jagged-edged leaflets and pink stalks. In a good summer will produce cylindrical flower spikes about 30cm long with dark red stems and very dark red flowers followed by inflated, pale green seedpods