Sow seed in spring and early summer.
One common North American plant of the genus Rudbeckia is the black-eyed Susan (Rudbeckia hirta). This perennial plant is known for its bright yellow flowers with dark centers, resembling a black eye. It is a popular choice in gardens and is also native to parts of Canada and the United States.
rudbeckia
The plant develops deep, slender, black roots
The spreading out of seeds from the original plant is called dispersal.
I do have to point out that the male plant doesn't produce seeds. It pollinates, which is what ultimately makes the female plant produce seeds. you would need a female plant to get any seeds at all.
RUDBECKIA
One common North American plant of the genus Rudbeckia is the black-eyed Susan (Rudbeckia hirta). This perennial plant is known for its bright yellow flowers with dark centers, resembling a black eye. It is a popular choice in gardens and is also native to parts of Canada and the United States.
rudbeckia
Rudbeckia
Rudbeckia
The plant develops deep, slender, black roots
The scientific or taxonomic name would be Rudbeckia spp.
Dark, papery, at a quick glance they look like chaff rather than a viable seed.
Rudbeckia is a febrifuge, useful in reducing fevers
The rudbeckia propagates easily from seed or by root cuttings
Rudbeckia is commonly known as the Black-eyed Susan.
The scientific or taxonomic name would be Rudbeckia hirta.