Lady Bird Johnson Wildflower Center - The University of Texas at Austin information

 Native Plant Database

Rudbeckia grandiflora

Rough coneflower, Tall coneflower

Asteraceae (Aster Family)

Rudbeckia grandiflora (Rough coneflower)
Bransford, W.D. and Dolphia
The erect, coarse tall coneflower grows 2 1/25 feet tall and usually forms colonies. The stem and leaves have rough hairs. Leaves at the bottom of the plant have long petioles, but the higher ones attach directly to the main stem. They are 2 1/26 inches long and half as wide, shallow toothed with prominent ribs. Flower heads have 812 ray flowers, 3/41 inch long, yellow and drooping. The cones are 3/41 1/4 inches high, gray-green, but turning brown as the flowers mature. Honey bees, bugs, butterflies, and beetles feed on the nectar and pollen (248).

Image Gallery:

26 photo(s) available

Plant Characteristics

Duration: Perennial
Habit: Herb
Size Notes: 2.5-5
Size Class: 3-6 ft.

Bloom Information

Bloom Color: Yellow , Green
Bloom Time: Apr , May , Jun , Jul , Aug


USA: AR , GA , IL , KS , KY , LA , MS , MO , OH , OK , TX
Canada: ON

Growing Conditions

Light Requirement: Sun
Soil Moisture: Moist


Conspicuous Flowers: yes

Last Update: 2011-08-03