Bi-colour florets of mixtures of blue and purple shades are produced because the colours blue and purple are co-dominated in delphiniums. When the plant colour is marked, the most dominate colour is listed first i.e. blue/purple.
All plants are guaranteed to be at least semi-double with no fewer than 13 petals. Variations in growth and colour may occur due to location, atmosphere, and soil conditions, etc.ty.