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.

'Merlot' is a compact cultivar of Itea virginica or sweetspire with fragrant white flowers in summer and great fall colour and red winter stems.

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

Ixia 'Gemini' is an exotic South African iris relative called a wand flower with creamy white flowers and purple centres.

Ixia are exotic South African bulbs with spikes of beautiful flowers in a range of bold colours.

Ixia 'Rose Emperor' has bright pink flowers with darker centres.

Ixia 'Yellow Emperor' is an exotic South African iris relative called wand flower with bright yellow flowers and dark eyes.

Jasminum officinale ‘Fiona Sunrise’ bright gold compound leaves and fragrant white flowers.

Pink or Chinese jasmine, Jasminum polyanthum, is also known as the florist's jasmine and has wonderful fragrance.

Jasminum x stephanense has clusters of fragrant pink flowers in early summer.

Kalanchoe beharensis is a dramatic, silver-felted, succulent with woody stems.

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

Kalanchoe marnieriana has blue-green, rounded, paddle-shaped leaves on vertical or leaning stems topped in summer by fiery red, bell-shaped flowers.

Kalanchoe rhombopilosa has stunning silver-white leaves with brown speckling.

Kalanchoe synsepala has green to grey-green, broadly serrated leaves with dark burgundy edges and stolons with little plantlets

Kalimeris incisa 'Blue Star' is a tough daisy relative with pale blue and yellow flowers all summer long.

Kalmia latifolia 'Minuet' has light pink buds that open to flowers bearing a bright cinnamon-maroon band.

Kalmia latifolia 'Sarah' offers the best red flowers of any mountain laurel. Bright red bud, coral pink flowers that do not fade.

Kalmia latifolia 'Tiddlywinks' is a small leaved selection with medium pink buds opening to soft-pink flowers.

Kniphofia rooperi is a late summer blooming red hot poker with large, orange-red, egg-shaped flowers fading to yellow.

Kniphofia 'Gold Rush' is a red hot poker with bright yellow, tubular flowers on tall spikes with attractive, blue-green grass-like foliage.

Kniphofia 'High Roller' is a red hot poker with torches of tubular flowers in bi-colours of cream and coral-orange.

Kniphofia 'Jackpot' is a red hot poker with torches of tubular flowers in bi-colours of bright red-orange and golden orange.