Clematis Rebecca (‘Evipo016’) (PBR) (Boulevard Series)

Bred by Raymond Evison and previewed at the RHS Chelsea Flower Show in 2008, this glorious clematis quickly became a top seller. The large flowers are a rich plum red (which is very rare in the clematis world), and they have a wispy boss of creamy-yellow stamens at their centre. They first appear in a profuse burst of colour in late spring or early summer, but will continue to flower intermittently throughout the rest of the summer and into early autumn. They look spectacular when teamed with deep purple, but the flower colour of ‘Rebecca’ can be variable. It tends to open a velvety crimson before fading to a brighter red, but the amount of sun the plant gets will also play a part, as the flowers tend to be a brighter red when grown in full sun (or during brighter weather).