Sweet Black-eyed Susan

Rudbeckia subtomentosa
Showy Black-eyed Susan (Rudbeckia fulgida)
Showy Black-eyed Susan (Rudbeckia fulgida)
Plant TypeFlowering Perennials
Sun ExposureFull Sun (6+ Hrs), Part Sun / Shade (3-6 Hrs)
HeightTall (>5')
Bloom MonthsAugust, September
Moisture NeedsNormal
Season of InterestSummer (Jun-Aug), Fall (Sep-Nov)
Ecological SignificanceNative Bee Friendly, Butterfly Friendly, Bird Friendly

Description

Sweet Black-eyed Susan is a tall, late-blooming native perennial that brings a bold sweep of golden-yellow flowers to the garden when many summer blooms are beginning to fade. Its daisy-like flowers with dark centers are borne in generous clusters atop sturdy, branching stems, creating a bright, classic prairie look from late summer into early fall. The plant’s height and open form allow it to rise above surrounding perennials without appearing heavy, adding both color and vertical structure to naturalistic plantings.

Ecological Value

The abundant flowers are a valuable late-season nectar source for native bees, butterflies, and other pollinators, helping sustain insect populations as floral resources become more limited. After blooming, the seed heads mature and provide an important food source for birds, extending the plant’s ecological value well beyond its flowering period. As a native prairie species, Sweet Black-eyed Susan also supports a diverse community of beneficial insects that contribute to healthy ecosystems.

Ideal Growing Conditions

Sweet Black-eyed Susan grows best in full sun to part sun with average moisture and well-drained soils. It is adaptable to a range of soil types, including loam and clay, and once established, it is generally resilient and low maintenance. While it tolerates some dryness, it performs best with consistent moisture during the growing season, especially in hot summer conditions.

Landscape Uses

This plant is an excellent choice for prairie gardens, native meadows, and large perennial borders where its height and late-season bloom can shine. It works particularly well as a back-border anchor or woven through grasses and fall-blooming perennials such as asters and goldenrods. Leaving the seed heads standing into fall and winter adds seasonal interest and supports birds, making Sweet Black-eyed Susan a strong performer for both beauty and ecological function.

Sweet Black-eyed Susan Native Range

Map Color Key

Species present in state and nativeSpecies present and not rare
Species not present in stateSpecies present and rare

Kartesz, J.T., The Biota of North America Program (BONAP). 2015. North American Plant Atlas. (http://bonap.net/napa). Chapel Hill, N.C. [maps generated from Kartesz, J.T. 2015. Floristic Synthesis of North America, Version 1.0. Biota of North America Program (BONAP). (in press)].

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