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.
Application/Zone
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 feet
Plant Type
Perennial herb
Indicator Status
Facultative Upland
pH
4.5-7.5
Nutrient Load Tolerance
Low to moderate
Salt Tolerance
Not available
Siltation Tolerance
Low
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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