Pint Plant from Canna Cannova Orange Shades This Canna has orange blooms that vary in shades on dark green foliage. Height: 30-48 in Spread: 14-20 in Spacing: 7-10. Standing in a compact but upright form with leaves that have a thick smooth texture. They bloom from early summer to the first frost in the fall. Hummingbirds and butterflies love these colorful flowers. Hardy in Zones 7-11.