Rudbeckia grandiflora (D. Don) J.F. Gmel. ex DC.
Rough Coneflower, Tall Coneflower, Largeflower Coneflower
Asteraceae (Aster Family)
USDA Symbol: RUGR
The erect, coarse tall coneflower grows 2 1/2-5 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 1/2-6 inches long and half as wide, shallow toothed with prominent ribs. Flower heads have 8-12 ray flowers, 3/4-1 inch long, yellow and drooping. The cones are 3/4-1 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).
From the Image Gallery
Bloom InformationBloom Color: Yellow , Green
Bloom Time: Apr , May , Jun , Jul , Aug
Growing ConditionsLight Requirement: Sun
Soil Moisture: Moist
BenefitConspicuous Flowers: yes
Value to Beneficial InsectsSpecial Value to Native Bees
This information was provided by the Pollinator Program at The Xerces Society for Invertebrate Conservation.
BibliographyBibref 248 - Texas Wildflowers: A Field Guide (1984) Loughmiller, C. & L. Loughmiller
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Additional resourcesUSDA: Find Rudbeckia grandiflora in USDA Plants
FNA: Find Rudbeckia grandiflora in the Flora of North America (if available)
Google: Search Google for Rudbeckia grandiflora
MetadataRecord Modified: 2020-06-23
Research By: TWC Staff