The 13cm (5in) wide, black-eyed, single, yellow daisy flowers of Rudbeckia fulgida var. sullvantii 'Goldsturm' are what make it one of many gardeners' top ten perennials.
This variety has an incredibly long flowering season, from mid-summer right through to the middle of autumn when the first severe frosts arrive. The plant is short enough not to need staking, and does not spread so fast that frequent division is necessary, making it a very easy-care plant.
Use it between other plants in a flower border, as it tolerates light shade, to extend the flowering season late into the year.