Rudbeckia triloba

Common Names

Brown-Eyed Susan, Three-Lobed Coneflower, Thin-Leaved Coneflower, Three-Leaved Coneflower, Black-Eyed Susan, Branched Coneflower

Summary

Rudbeckia triloba, commonly called brown-eyed Susan or three-lobed coneflower, is a native North American biennial or short lived perennial that forms clumps with upright, multi branched stems reaching 2-5 ft tall and 2-3 ft wide, flowers are yellow daisies 1-2 inches across with dark brown centers, and green basal leaves are three-lobed with a basal rosette that persists through winter, it grows best in full sun to partial shade in average, moist, well drained soils, tolerating heat and some drought, easily grown from seed and self seeds readily, naturalizing in borders, wildflower meadows, prairie plantings, cottage gardens, and other naturalized areas, forms a good cut flower, attracts butterflies and bees, and is deer resistant, deadheading can extend blooming, though powdery mildew may occur

Lifecycle

Biennial

Height

2-5 feet

Spread

2-3 feet

Hardiness Zones

Zones 3-11

Sunlight Requirements

Ideally Full Sun; tolerates Partial Sun and Partial Shade.

Soil Type

Loamy, well-drained soil rich in organic matter

Soil Drainage

Well-drained

Soil pH

Tolerates all pH levels

Bloom Color

Yellow

Bloom Time

Summer to Fall

Foliage Color

Green

Fall Foliage Color

Green

Leaf Lifecycle

Deciduous

Growth Rate

Fast

Seasons of Interest

Summer and Fall

Propagation Methods

Seeds, Cuttings, Division

Attracts Wildlife

Attracts bees, Attracts butterflies, Attracts other pollinators, Attracts birds