Black-eyed Susan(Rudbeckia hirta) is a particular favorite among butterflies. Its striking yellow ray petals contrast beautifully with its rich blackish-brown cone-shaped centre.
Black-eyed Susan grows from the Canadian grassland south to Florida. It grows 60-90 cm (2-3ft) tall, and makes a perfect long lasting cut flower. Aboriginal people use leaves of Black-eyed Susan as a kidney medicine.