Gloriosa Daisy (Rudbeckia hirta 'Prairie Sun')
While ‘Prairie Sun’ is a cultivar of the species *Rudbeckia hirta*, the species itself, Gloriosa Daisy (Black-Eyed Susan), is **native to North America, specifically the central and eastern parts of the United States and southeastern Canada.**
Although it has a cultivar name like “Prairie Sun” suggesting the prairie region, *Rudbeckia hirta* is quite adaptable and can be found in a wide range of habitats beyond just prairies. It grows in meadows, fields, open woodlands, and along roadsides.
Therefore, the most accurate answer is: **North America, particularly the central and eastern United States and southeastern Canada.**
Suitable in 3 gallon or larger, Needs excellent drainage in pots