Sarah Raven Sarah Raven is a gardener, cook, writer and television presenter. Sarah Raven: The flowers I have that are flourishing superbly, despite the battering heat of this summer Gardener and writer Sarah Raven on the flowers that haven't wilted in the heat. The world's greatest wildflowers: Where to find them and why they bring us so much joy Lady’s slippers by the hundreds if not thousands, hillsides golden with daisies, swards of salvias: Sarah Raven salutes Bob Gibbons, who has dedicated the best part of his life to finding and documenting wildflowers. Photographs by Bob Gibbons.