Description
Canna ‘Wintzer’s Colossal’ is a tall Italian Group cultivar; green foliage, oblong shaped, obtuse apex, branching habit; round main stems, coloured green; oval flower stalks, coloured green; clusters of flowers are open, self-coloured scarlet, staminodes are large, edges irregular, petals green, fully self-cleaning, average bloomer, flowers in August until frosts in northern temperate zone, blooms open in the early morning; seed is sterile, pollen is low fertile; rhizomes are thick, up to 3 cm in diameter, coloured purple; tillering is average.
