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Rudbeckia triloba

Also called Brown-eyed Coneflower, Thin-leaved Coneflower


More About Rudbeckia triloba

  • Biennial or short-lived perennial
  • Clumping, stiff, upright, well-branched stems
  • Loaded with yellow, daisy-like flowers
  • Rough-textured, thin, green, tri-lobed leaves
  • Stem leaves are usually narrower and shorter than the species
  • Bloom Time: Early July to mid-fall
  • Flower Size: 4 cm

Interesting Notes:

Native to Eastern US and has naturalized throughout Ontario.

Zone:

3

Height:

80-100 cm

Spread:

60-70 cm

Colour:

Yellow
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Three Lobed Coneflower Growing and 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. 


Rudbeckia triloba Characteristics

Full Sun
Full Sun
Partial Sun/Shade
Partial Sun/Shade
Attracts Butterflies
Attracts Butterflies
Attracts Birds
Attracts Birds
Fast
Fast
Rabbit Resistant
Rabbit Resistant
Deer Resistant
Deer Resistant
Cut Flower/Foliage
Cut Flower/Foliage
Long Blooming
Long Blooming
Drought Tolerant
Drought Tolerant
Heat Tolerant
Heat Tolerant

Soil Moisture

Well-drained
Moist to Average

Flowering Time

Lt. Sum-Fall
Fall
Summer

Habit

Upright
Clumping

Foliage Color

Green

Landscape uses

Naturalizing