Iris sibirica 'Concord Crush' has bright blue, double flowers that bloom for a long period of time and may rebloom later in the season.

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 'Kaboom' has large, bi-colour, double blooms of violet-blue and contrasting creamy centres with purple veining.

Iris sibirica 'Mission Bay' has sublime flowers in pale blues with darker veining and yellow centres.

Iris sibirica 'On Mulberry Street' has magnificent flowers in a mix of of blue, violet, creamy-white, and yellow with purple veining.

Iris sibirica 'So Van Gogh' has a bicolour palette of yellow and blue-purple flowers with purple veining throughout.

Iris sibirica 'Uncorked' has unique flowers in shades of golden yellow, sky blue, and purple-black with detailed veining.

Iris sibirica 'Sky Mirror' has beautiful flowers in shades of sky blue, royal blue, and lavender-blue.

Iris 'Loop the Loop' puts on a dramatic show with ruffled white flowers edged in purple-blue.

Iris tectorum is a roof iris with lovely, large, six inch wide blue flowers with white and purple markings.

Iris tenax or tough-leaf iris is a West Coast native with beautiful blue, lavender and purple blooms and evergreen foliage.

Iris unguicularis is a surprising feature of the winter to spring garden with fragrant, blue-mauve flowers from November-March.

Iris unguicularis is a surprising feature of the winter to spring garden with fragrant, icy blue-mauve flowers from November-March.

Iris x ampliflora 'Ming Treasure' is a stunning giant plant with large, violet-blue flowers, yellow crests and white signals.

Iris x hollandica 'Sapphire Beauty' is a Dutch hybrid with beautiful lavender blue standards and royal blue falls with a bright yellow dot.

Iris x hollandica 'Silvery Beauty' has silver-blue flags and white and yellow falls.

Iris x hollandica 'Telstar' is the darkest of the blue Dutch iris with lustrous royal blue flowers highlighted with a yellow patch on each fall.

'Abiqua Falls' is a beautifully ruffled, award-winning, sapphire blue iris with great vigour.

Iris 'Alsea Falls' is a striking amoena type bearded iris with ruffled white standards and purple-blue falls.

'Autumn Circus' is a wonderful reblooming plicata bearded iris with icy white ruffled flowers overlain with blue-violet markings.

Iris ‘Blue Suede Shoes’ is a fragrant, reblooming bearded iris with deep blue blossoms and yellow beards.

Iris ‘Bountiful Harvest’ is a floriferous, reblooming bearded iris with violet standards, white and violet falls, and lavender beards.

'Breakers' is a very ruffled, bubbly and effervescent iris with medium blue to deep blue flowers.

Iris 'Deschutes' is a beautifully ruffled blue iris with royal blue standards and darker falls with blue beards.