A perfect grand finale to the iris season, Gusto offers gorgeous color contrast with violet-blue petals, large white centers and streaks of yellow. Gusto adds pops of colors to water gardens, along streams and ponds, and in moist borders. Its long, narrow, swordlike, bright green foliage provides an attractive backdrop for the flowers. While Japanese iris are the last of the iris to bloom, they are worth the wait. Their slightly flattened flowers are stunning in the garden and fresh cut floral displays. Bareroot. Iris ensata 'Gusto'