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Illinois Native Plant Guide - Black-Eyed Susan - Pages 120-121

Illinois Native Plant Guide

Black-Eyed Susan
Rudbeckia hirta

Preferred Water Depth and Inundation Tolerance

Mesic to wet prairie species. Species has limited inundation tolerance.

Wildlife Value

Attracts butterflies and is used for cover.


Extensive fibrous root system stabilizes soil on upland slope buffers.

Availability, Establishment, and Maintenance

  • Easily established from seed. No pretreatment of seed is necessary.
  • This species can be very aggressive.
  • This species is early successional and will “thin out” in mature restorations.

Black-Eyed Susan
Rudbeckia hirta

Mature Height
1 to 2 feetBlack-Eyed Susan

Plant Type
Perennial herb

Indicator Status
Facultative Upland


Nutrient Load Tolerance
Low to moderate

Salt Tolerance
Not available

Siltation Tolerance

Flowering Color and Time
Yellow with black/brown center
June to July

Light Preference
Partial to full sun

Seeding Rate
.125 - .3 lbs/acre

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