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Rudbeckia hirta, a late summer- to autumn-flowering biennial or short-lived perennial that can grow to as much as 2m tall It is native to the central United States and the colour of the flowerheads is variable, sometimes with pure yellow ray florets but of ten with varying degrees of orange to red brown near the central cone. Garden cultivars tend to be shorter than the wild plants. rudbeckia-2220htm'>Rudbeckia.
