Rudbeckia fulgida var. sullivantii 'Goldsturm' is an exceptionally good form of black-eyed Susan, or the American coneflower. It has large daisy-like flowers, with slender, bright yellow ray petals surrounding the central black cone. Great for bright summer colour in the herbaceous border

Excellent form of 'black-eyed Susan'; large yellow daisies with black centres.