Iris histrioides 'Frank Elder' is a very special early spring-blooming iris with palest blue flowers with sky blue veins and yellow markings and a lovely fragrance.

Iris histrioides 'Katharine Hodgkin' is an early spring-blooming iris with icy blue flowers detailed with royal blue, yellow, and white.

Iris histrioides 'Katharine's Gold' is a fragrant, early spring-blooming pale yellow and white iris with blue dots.

Iris histrioides 'Lady Beatrix Stanley' has deep, lustrous, royal blue, fragrant flowers in early spring.

Iris japonica, known as fringed or crested iris, has white petals decorated with blue and yellow markings atop evergreen foliage.

Iris japonica 'Aphrodite', known as variegated fringed or crested iris, has white petals decorated with blue and yellow markings atop evergreen foliage.

Iris pseudata 'Shiryukyo' is a tall cultivar to four feet with violet and purple tones and veining set off with a bright yellow signal.

Iris pseudata 'Yarai' is a has tones of peach with royal-purple veining and a bright yellow signal.

Iris reginae is an elegant bearded iris with fragrant, lavender to white flowers with intricate, dark purple veins.

'Alida' is a beautiful Iris reticulata in all shades of blue from palest sky blue to glowing royal blue.

Iris reticulata 'Blue Note' has fragrant deep blue to purple-blue petals tipped with purple-black.

Iris reticulata 'Eye Catcher' is a striking, hardy dwarf iris with white, cobalt blue, and yellow flowers..

Iris reticulata 'Frozen Planet' has palest icy blue and white flowers.

Iris reticulata 'Halkis has blue petals with the falls dipped in purple and speckled with dark purple, yellow and white.

Iris reticulata 'Harmony' offers royal blue petals with yellow and white markings.

Iris reticulata 'J.S. Dyt' offers royal purple petals with yellow and white markings.

Iris reticulata 'Pauline' has fragrant, rich royal purple flowers with the tips of the falls dipped in purple-black and lit with yellow.

Iris reticulata 'Sea Breeze' is a striking, hardy dwarf cultivar with royal blue, white and yellow flowers.

'Summer's Day' has lovely mid blue flowers with darker blue stripes and a yellow central stripe on each fall.

Iris setosa, the bristle-pointed or Arctic iris has attractive violet, purple, or blue flowers with white and yellow markings.

Iris sibirica 'Blueberry Fair' is a heavily ruffled Siberian iris in shades of royal blue and lavender blue with white, yellow and cinnamon detailing.

Iris sibirica 'I See Stars' is a unique Siberian iris with 6 rich royal blue falls instead 3 giving a full, star-like appearance.

Iris sibirica 'Rikugi Sakura' is a stunning and elegant Siberian iris with lilac-pink flowers and falls with their bases in yellow and cinnamon.