Rudbeckia triloba
(Three-leaved Coneflower)
Family - Asteraceae
Category - Perennial, biennial
Origin - USA
Year of Introduction - 1699
Season of Interest - Summer, Autumn
Hardiness - H7
Height - up to 1.5m
Location - The Hot Garden
Description: A clump-forming Perennial with an upright habit. Mid-green leaves are ovate, although the Basal Leaves are Divided into three lobes, giving the plant its species name. Abundant, golden yellow, daisy-like flowers, each with a prominent, black central cone are produced on branched stems from midsummer into mid-autumn. Technically a short-lived Perennial, but often used as a Biennial. Will self-sow.
Award of Garden Merit (AGM).
Flower:
Daisy-like flower heads are composed of reflexed, golden yellow ray florets (petals) surrounding a prominent, black central cone of disc florets. Flowers are produced from July into October.
Flower colour: Yellow
Flower shape: Daisy-like flowers, disc and ray florets
Flowering time: July, August, September, October
Foliage:
Mid-green leaves are ovate, often Divided into three lobes at the base of the plant, and held on tall, slender stems.
Foliage Senescence: Deciduous
Foliage Shape: Ovate, three lobed
Propagation:
Seed.
Cultivation:
Best in full sun in moisture retentive, but well drained soil.