‘Prairie Glow’ Three-lobed Coneflower produces bicolored daisy-like flowers. The delicate gold petals have red eyes surrounding the black cones. The bloom period of Rudbeckia triloba ‘Prairie Glow’ starts in July and continues into early fall, especially if deadheaded. Three-lobed Coneflowers are an important food source for native bees, beetles and butterflies because of the long flowering season. A biennial, ‘Prairie Glow’ seeds readily in meadows, gardens and sunny disturbed areas like roadsides.