There are some pretty classy plant introductions at this year's RHS Centenary Chelsea Flower Show and below we take a look at a selection which caught our eye.

Cayeux Iris, of Vaour, France, have several new introductions in 2013. Iris 'Barbe Noire', Iris 'Nelly Tardivier', Iris 'Grand Veneur', Iris 'Saphir Jaune', Iris 'Villa Erba', Iris 'Tel Arlequin' and Iris 'Domino Noir'.

We particularly liked  Iris 'Fleur de Feu' with its large, amply-waved flowers and pure yellow standards. Horizontal lemon-yellow falls which feature a clear, fine burgundy border and upright stalks. Warm orange beards. Flowers mid to late season with a height of 80cm. First time commercially available. (www.iris-cayeux.com)

Read more: New Plant introductions at RHS Centenary Chelsea Flower Show

From the quintessentially English to the tropical Australian, via Japan and Lesotho, Sandy Felton takes a look at the Centenary RHS Chelsea Flower Show.

When an organisation reaches a centenary celebration there is always going to be the expectation of something special, a milestone achieved and a frisson of excitement as the event approaches.

For the RHS Centenary Chelsea Flower Show, sponsored by M&G Investments, it was no different. How does a flower show which has built a global reputation for horticultural excellence do even better? Perhaps the record breaking number of gold medals might be an indication - 92 exhibits this year - or the fact that for the first time 10 Show Gardens have been awarded RHS Gold Medals.

Read more: Chelsea celebrates with style and flair

Gertrude Jekyll (1843-1932) was one of the most influential garden designers of all time, whose impact on the art of gardening is still evident around the world today. A new exhibition of her life and work, currently being run at The Lightbox gallery and museum in Woking, Surrey, explores her multi-talents as a writer, interior and applied arts designer, embroiderer, botanist, herbalist and garden designer.

The exhibition is supported by Squire's Garden Centres, the Worshipful Company of Gardeners and Replica Plants and runs until 8th September 2013.

Jekyll was born into an upper-middle-class family in 1843, as a result of which she came into contact with the steady flow of eminent visitors from the worlds of art and science.

Read more: Exhibition exploring life of Gertrude Jekyll