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PLANT BASE
Rudbeckia hirtia
Black eyed susan
Height
Spread
Growth
habit
​
3-7
2-3'
1-2'
Form Lifecycle Hardiness zone*
Clumping
Flower
Biennial
Common Black-eyed Susan, Brown-eyed Susan
APPEARANCE
Bloom time
Bloom color
​
June-October
Violet/ pinkish
Fall bloom
USE FOR
Seasonal interest
ENVIRONMENT
Terminal clusters
Light
​
Water
Soil
Soil pH
Loam
Moderately Acidic
Soil Preference
Well-drained
ENVIRONMENTAL TOLERANCE
Air pollution, Heat, Black walnut, Clay soil, Drought
HABITAT & NATIVE RANGE
Prairies and meadows, pastures, openings, woodland edges
Massachusetts to Wyoming to Florida, naturalized across much of US
BROWSE TOLERANCE
Air pollution, Heat, Black walnut, Clay soil, Drought
Tolerance to browse by animals typically happens once plants are established. Young plants may still be quite susceptible.
SUGGESTED MAINTENANCE & COMMON PROBLEMS
Divide every 2-3 years, don't add thick mulch as will cause rot
COMPANION PLANTS
Butterfly weed,Joe pye weed,Dense blazing star
COMPANION TREES & SHRUBS
NOTES
Water during dry spells to promote bloom
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