Gardener and writer Sarah Raven on the flowers that haven’t wilted in the heat.
As late-summer and autumn border fillers, long-lasting cut flowers and container troopers, rudbeckias are stellar — even in all this summer’s heat. The bright golden ones are not my cup of tea, but I adore the aubergines, mahoganies, crimsons and yellow greens. ‘Cherry Brandy’ is a long-standing stalwart I’ve picked until Christmas for many years and I love the seed-grown,…