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Rudbeckia triloba

Brown-eyed Susan is easily identified by its unique brown center cone and the many dozens of showy golden-yellow flowers that appear in early summer. It is an herbaceous biennial or short-lived perennial that grows in a wide range of environments. Fairly common in most of the North Carolina mountains and thriving in average, well-drained soils. It can be found all the way from hardwood forests to open meadows, easily reseeding itself to form large masses. The Latin triloba refers to the three-lobed basal leaves and leaves along the reddish-brown hairy stem. Freely branched stems each hold flowers that bloom from summer through autumn and make an excellent cut flower. Its basal rosette and architectural seed heads persist through the winter, adding to its attractiveness. More numerous flowers than Rudbeckia hirta, with showier and fewer petals. It would make it a great addition to a pollinator garden or meadow if you’d like to try something new! High drought tolerance and moderately deer resistant.

Key Info

Scientific Name: Rudbeckia triloba L.
Common Names: Brown-Eyed Susan, Thin-leaved Coneflower, Three-lobed Rudbeckia
Family Names:
Protected Plant Species: No
Light Requirement: ,
Moisture Requirement: ,
Leaf Retention:
Bloom Times: , , ,
Flower Color: Yellow, gold

Additional Info

Habit: Erect, freely branched, clump forming
Height: 2-5'
Spread: 1-1.5'
Soil Conditions: Moist, disturbed soils
Leaves: Leaves are 2 to 4 inches long, dark green, and rough with bristly hairs on both surfaces. Basal leaves are mostly ovate, but stem leaves mostly have 3 distinct lobes. Leaves are alternate and upper leaves become smaller with sharply pointed teeth or smooth edges.
Flowers (or reproductive structures: The flowers are typical of the genus, with a dark brown daisy-like disk and golden-yellow rays, about 1-2 inches across.
Fruit: The nutlets appear in autumn (typically August through November) and turn charcoal-gray at maturity, usually 3-4 weeks after the bloom period.
USDA Hardiness Zone: 4-8
USDA Wetland Indicator Status in NC: FACU
Pollination: Self-pollinated
Wildlife Connections: Attracts bees, butterflies, and other pollinators with its nectar and pollen. Larval host for Silvery Checkerspot (Chlosyne nycteis). Also supports the Wavy-lined Emerald (Synchlora aerata) larvae. Songbirds, especially goldfinches, enjoy the seeds in autumn.
Propagation: Seed, division