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
Native to Eastern US and has naturalized throughout Ontario.
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
Moist to Average
Flowering TimeLt. Sum-Fall