Three Lobed Coneflower, Brown-eyed Coneflower, Thin-leaved Coneflower

Three Lobed Coneflower, Brown-eyed Coneflower, Thin-leaved Coneflower

Rudbeckia triloba

A coneflower with long-lasting blooms and persistent seed heads that attract pollinators and birds through winter.

  • Biennial or short-lived perennial
  • Clumping stiff upright well-branched stems
  • Rough-textured thin green tri-lobed leaves
  • Stem leaves are usually narrower and shorter than the species
Size
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Plant Characteristics

Sunlight
Full sun, Partial shade, Shade
Soil Moisture
Well-drained, Moist, Average
Drought Tolerant
Hardiness Zone
3 – 3
Mature Height (meters)
0.8 – 1.0
Mature Spread (meters)
0.6 – 0.7
Growth Rate
Fast
Flower Colour
Yellow
Foliage Colour
Green
Bloom Time
SummerFall
Habit
Upright
Deer Resistant
Rabbit Resistant
Pollinator Friendly
Attracts Birds
Landscape Uses
Border, Mass planting, Accent
Growing & Maintenance Tips
Grows best in an average to moist, well-drained soil in full sun. It will tolerate some shade but may grow leggy and need support. Deadheading will help prevent unwanted seeding and possibly extend bloom time. Will withstand hot, humid summers and has a good tolerance to drought. Leaving finished flowers will provide both winter interest and food for birds. A biennial that is a very prolific seeder and flowers from its first year's germination.
Notes
Native to Eastern US and hasnaturalized throughout Ontario.