Rudbeckia subtomentosa

Sweet Coneflower

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Sweet coneflower has a long bloom time from summer to early fall.

See Details Below


Sweet coneflower has a long bloom time from summer to early fall.  Its fragrant, daisy-like flowers have yellow rays and dark brownish-purple center disks. Sweet coneflower is a good choice for a pollinator garden or rain garden.

Wildlife value: Rudbeckia subtomentosa is a larval host plant for Silvery Checkerspot (Chlosyne nycteis) caterpillars, Wavy-Lined Emerald (Synchlora aerata) caterpillars, and several other butterfly species.  Native bees and other pollinators feed on the nectar and pollen of the flowers.

Plant Details:

Other Common Names: Sweet Black-eyed Susan

Plant Type: Flower, Perennial

New Jersey Native: No

Bloom Times: Summer, Late Summer to Fall

Bloom Colors: Orange, Yellow

Deer Resistance: Some

Attracts Pollinators and Wildlife: Bees and Other Pollinators, Butterflies, Birds

Salt Tolerance: Low to None

Hardiness Zone: 6a, 6b, 7a, 7b

Physiographic Region: All Regions in NJ

Soil Characteristics

Soil Type: Loam, Sandy, Clay

Soil Moisture: Dry, Moist

Soil pH: Slightly Acidic, Neutral

Light Needs of Plant

Optimal Light: Full Sun

Light Range: Full Sun, Partial Shade

Water Needs of Plant

Soil Moisture: Dry, Moist

Drought Tolerance: Medium

Size and Growth Rate

Height: 3 - 5 ft

Spread: 1 - 3 ft

Growth Rate: Medium