'Rhein Nixe' is an heirloom iris with lovely icy white standards and warm raspberry violet purple falls edged and etched with white.

Iris 'Rings True' is an ivory white cultivar with pale blue edges to the standards and royal purple edging to the falls.

Iris 'Rings True' has snow white standards edged in pale blue and ivory white falls edged in rich royal purple.

Iris 'Sea Eagle' is a wonderful cultivar with undulating petals in rich blue with hints of purple.

Iris 'Side Line' offers orange-gold flowers with a light red infusion in in the standards and dramatic deep red stripes in the falls.

Iris ‘Sneak a Peak' has golden yellow standards and falls in purple-blue, reddish purple, burgundy, and yellow.

Iris 'Sorbonne' has black-burgundy standards and black-burgundy edged falls with creamy centres flushed with yellow.

Iris 'Stellar Lights' is a stunning deep blue-purple with incredible depth of colour set off by a patch of icy white.

Iris 'Struck Twice' has lovely creamy white standards flushed with salmon and bolder falls in shades of salmon pink and peach.

Iris 'Sunrise Elegy' has buttercup yellow standards with flushes of white and white falls edged in yellow.

Iris 'Titan's Glory' has rich dark violet purple standards and falls with royal blue beards.

Iris 'Total Recall' offers delicate tones of white, cream, pale yellow, and lemon yellow with yellow beards.

Iris 'Valentino' has warm coppery red standards and rich burgundy falls.

Iris 'Vicar' has gorgeous warm plum purple flowers set off by blue beards and subtle blue lines on the falls.

Iris 'Volcanic Glow' has intricately ruffled flowers of burgundy red and aureolin yellow.

Iris 'Wench' offers a dramatic contrast of colours with light pink standards and deep plum purple falls etched with white.

Iris 'You Grow Girl' has alabaster white standards with a hint of lavender and pale pink and blue-purple falls with bright orange beards.

Isotoma axillaris 'Beth's Blue' is a blue star flower with dainty, star-shaped, violet-blue flowers and fern-like foliage.

Ixia viridiflora offers one of the strangest and most extraordinary colours in the botanical world: turquoise.

Ixiolirion tataricum is known as Siberian or lavender mountain lily. It has beautiful, lily-like, light blue to dark blue or purple flowers.

Jatropha podagrica is an erect stem succulent with large leaves and clusters of bright reddish orange flowers.

Kaempferia roscoeana, peacock ginger, has beautifully marked oval leaves and lavender flowers with white eyes.

Kaempferia rotunda 'Mt. Kanchangjung'/'Himalayan Easter' has pure white orchid-like flowers and striking mottled foliage.

Kalanchoe luciae 'Variegata' is a spectacular form of the flapjack or paddle plant with grey-green, white and red leaves.

Kirengeshoma palmata 'Black Style' is a Korean waxbells with black stems that hold up the creamy yellow flowers.