ORIGIN Percy-Lancaster, S HEIGHT Tall FOLIAGE Purple FORM Arching FLOWER Red FLOWERING Low bloomer
Canna ‘Black Knight’ is a tall Crozy Group cultivar; purple foliage, oval shaped, arching habit; round stems, coloured purple; flowers are reflexed, self-coloured crimson-maroon, staminodes are large, edges regular, petals purple with farina, fully self-cleaning, low bloomer, blooms open in the early morning; seed is sterile, pollen is low fertile.
Similar to ‘Assaut’, but a deeper velvety red. Petals are very large and relatively long, almost strap like. I have compared cultivars from various sources of the UK, and Dutch imports, and the USA, and they are the same. The long petals in a loose arrangement give the head an extravagant “Mop Head” appearance. The flower head are so large and heavy that they often bend over. Tall
Long velvety dark red petals which are somewhat strap-like, giving the flower the appearance of a “mop-head”. Grows tall, 2m or more, but not quite as tall as, say ‘Wyoming’ or ‘Roi Humbert’. Pale bronze foliage.
Ian Cooke, The Gardeners Guide to Growing Cannas
(syn. ‘Black Velvet’, possibly also a synonym for ‘Ambassador’) (T) ‘Black Knight’ is the name widely used in the British Isles for a cultivar with large, floppy, deep crimson flowers that have reflexed petals. The name also appears in Indian lists but is not registered. The stems bear an attractive contrasting white farina and the leaves are bluish-purple. It is readily available, but stocks are often not true to type.