By the time we get to mid-summer the big, tall, macho perennials are beginning to make themselves known. They often have coarse foliage and few flowers. Rudbeckia laciniata ‘Herbstonne’ is a low fountain of elegant leaves that have a slightly blue sheen, making them attractive in their own right. The slender stems start to grow rapidly in late July and by August they have branched out and are topped with daisy-like flowers that are typical of the genus. When the flowers are fully open the petals droop down, leaving the cone to point skywards.
On the heavy, moist soil that the plant likes it will grow to 2.5m tall. Like all Rudbeckias, this lasts well as a cut flower in a vase.