It is an herbaceous perennial growing up to 3 m (10 ft) tall, with slightly glaucous leaves, and composite flowers in late summer and autumn (fall). The disc flowers are green to yellowish green, while the rays are pale yellow.
Common names include cutleaf, cutleaf coneflower, goldenglow, green-headed coneflower, tall coneflower and thimbleweed (note that several other plant species are also known as thimbleweed).
Rudbeckia laciniata is widely cultivated in gardens and for cut flowers. Numerous cultivars have been developed, of which 'Herbstsonne' ("Autumn sun") has gained the Royal Horticultural Society's Award of Garden Merit. However, the Lady Bird Johnson Wildflower Center notes that " Because it spreads rampantly by underground stems, cut-leaf coneflower is only appropriate for large sites."
Traditionally, the young leaves have been gathered from the wild and eaten in the early spring. They are greatly favored as a potherb (cooked). Though some references state the use of this plant as salad greens (raw), traditional use is as cooked greens. This is assumed to be done to remove toxins. However, there is little evidence of their presence. One report cites circumstantial evidence of poisoning to horses, sheep and pigs.
- Rudbeckia laciniata at USDA PLANTS Database
- RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 1405332964.
- Harrison, Lorraine (2012). RHS Latin for gardeners. United Kingdom: Mitchell Beazley. p. 224. ISBN 9781845337315.
- "RHS Plant Selector - Rudbeckia laciniata 'Herbstsonne'". Retrieved 2 June 2013.
- Rudbeckia laciniata http://www.wildflower.org/plants/result.php?id_plant=RULA3
- Banks, William. 2004. Plants of the Cherokee. Great Smoky Mts. Assn.: Gatlinburg, Tennessee.
- Hamel, Paul; Chiltoskey, Mary U. (1975). Cherokee Plants and Their Uses -- A 400 Year History. Sylva Herald Publishing.
- Witthoft, John (1977). "Cherokee Indian Use of Potherbs". Journal of Cherokee Studies 2 (2): 251.
- Kingsbury, J.M. (1964). Poisonous Plants of the United States and Canada. Englewood Cliffs, New Jersey: Prentice-Hall Inc.
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