Royal horticultural society

Piet Oudolf’s long borders at Wisley were worn out. The famous designer had in fact become a bit embarrassed by them: they’d done well for 20 years but in that time his own style had evolved – and so had people’s tastes. Oudolf is now such a household name that his pointillist landscaping is considered fine art on paper, let alone when actually planted up. (There are weighty coffee-table books exploring his art.) But the long borders had become, well, just borders, on either side of a long grassy walk up the hill from the Wisley glasshouses. Many of the people who visit Wisley for a walk – rather than

Elizabeth Blackadder, who died last month at the age of 89, was probably the most distinctive botanical artist of our time. Her paintings of lilies and irises, of cats poking their heads imperiously between poppies and freesias, are more alive than any such chocolate-box description could convey. The first woman to be elected to both the Royal and the Royal Scottish academies, Blackadder showed that botanical painting did not need to be twee and parochial. It could be as vibrant and interesting as narrative. The 15 artists and 19 photographers participating in this year’s Royal Horticultural Society exhibition at the Saatchi Gallery follow in Blackadder’s tradition. The Saatchi may not