Zinnia trial at RHS Wisley

Zinnias are part of the sunflower tribe, in the daisy family. Sarah Raven calls them 'late-summer superstars', they definitely bring a bright splash of colour to the border from July to October and are great as cut flowers. This selection of images taken at RHS Wisley includes a wide range of cultivars, in particular the unusual Zinnia 'Red Spider' and Zinnia elegant 'Queen Red Lime', as well as new varieties Zinnia 'Zany Rose Picotee' and 'Zany Scarlet'.