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For successful seedlings,
see the growing notes at the bottom of the page!
Brown-eyed Susan (Rudbeckia triloba) is a native perennial that resembles black-eyed Susan but has some distinctive differences: it grows taller, blooms later and for a longer period, and has smaller flowers. Its name comes from its dark green basal leaves, which are divided into three oval parts. From late summer until the first frost, it brightens up the garden with clusters of yellow flowers featuring dark brown centers. While it is adaptable to various growing conditions, brown-eyed Susan prefers full sun or light shade and moderately moist soil.
Ecological Roles
Brown-eyed Susan is especially valuable for late-season pollinators, attracting bees, butterflies, and other insects with its abundant, late blooms. Its flowers provide nectar and pollen, and its seeds offer a food source for birds as fall approaches. By adding brown-eyed Susan to naturalistic gardens or prairies, you support local biodiversity while enjoying vibrant colour and extended blooming throughout the season.
Brown-eyed Susan seeds require cold stratification to ensure germination. See the cultivation notes below for more details.
Akène cannot assume any responsibility for the use of plants for therapeutic purposes. Always seek advice from a professional before using a medicinal or edible plant.
Sowing and Growing
Technical Details
Seeds per packet: 250
Family: Asteraceae
Scientific name: Rudbeckia triloba
Life cycle: Perennial
Hardiness zone: 3
Soil type: Silty to clayey
Soil moisture level: Medium to humid
Soil - additional attributes: Well-drained
Light: Sun
Blooming: July to November
Spacing: 90 cm
Height: 120 cm
Deer resistance: High
Stratification: 30 days
Scarification: No
Germination time: 10 to 20 days
Sowing depth: 2 mm