''Rudbeckia triloba'' is a species of flowering plant in the sunflower family native to the United States. It is sometimes grown in gardens, but it is usually seen in old fields or along roadsides.
It is a herbaceous biennial or weak perennial native to Central and Eastern United States. Height is 2–3 ft with a spread of 1.0 to 1.5 ft . The species needs full sun and medium water. It is easy to grow. Spent flowers should be removed to encourage additional bloom and/or to prevent any.. more