The plant genus Rudbeckia is a member of the broader Asteraceae family. Rudbeckia blooms, which feature a prominent, elevated central disc in black, brown hues of green, and in-between tones, are also known as coneflowers and black-eyed susans. The starry blossoms of these hardy, long-blooming plants look magnificent in borders, summer bedding, containers, and prairie plantings. Pollinators like bees and butterflies are known to be drawn to rudbeckia, which boosts the biodiversity of your garden. The ideal temperature range for rudbeckia plants is between 65 and 80 °F (18 and 27 °C).