Rudbeckia hirta
L.
Asteraceae
The Temperate Database is in the process of being updated, with new records being added and old ones being checked and brought up to date where necessary. This record has not yet been checked and updated.
Common Name: Black Eyed Susan
General Information
Rudbeckia hirta is a Biennial/Perennial up to 2.00 metres tall.
It is harvested from the wild for local use as a medicine and source of materials..
Known Hazards
This plant is reputed to be poisonous to cattle, sheep and pigs[
155- Title
- Flowers of the Southwest Mountains.
- Publication
-
- Author
- Arnberger. L. P.
- Publisher
- Southwestern Monuments Ass.
- Year
- 1968
- ISBN
- -
- Description
- A lovely little pocket guide to wild plants in the southern Rockies of America.
].
Botanical References
17- Title
- Flora of the British Isles.
- Publication
-
- Author
- Clapham, Tutin and Warburg.
- Publisher
- Cambridge University Press
- Year
- 1962
- ISBN
- -
- Description
- A very comprehensive flora, the standard reference book but it has no pictures.
,
200- Title
- The New RHS Dictionary of Gardening. 1992.
- Publication
-
- Author
- Huxley. A.
- Publisher
- MacMillan Press
- Year
- 1992
- ISBN
- 0-333-47494-5
- Description
- Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
Range
N. America - most areas apart from the far north. An occasional garden escape in Britain[
17- Title
- Flora of the British Isles.
- Publication
-
- Author
- Clapham, Tutin and Warburg.
- Publisher
- Cambridge University Press
- Year
- 1962
- ISBN
- -
- Description
- A very comprehensive flora, the standard reference book but it has no pictures.
].
Habitat
Disturbed soils in Texas[
274- Title
- Illustrated Flora of North Central Texas
- Publication
-
- Author
- Diggs, Jnr. G.M.; Lipscomb. B. L. & O'Kennon. R. J
- Website
- http://artemis.austincollege.edu/acad/bio/gdiggs/NCTXpdf.htm
- Publisher
- Botanical Research Institute, Texas.
- Year
- 1999
- ISBN
- 1-889878-01-4
- Description
- An excellent flora, which is also available on-line.
]. Open woodlands, fields and roadsides at elevations of 30 - 300 metres[
270- Title
- Flora of N. America
- Publication
-
- Author
-
- Website
- http://flora.huh.harvard.edu/fna/
- Publisher
-
- Year
- 0
- ISBN
-
- Description
- An on-line version of the flora with an excellent description of the plant including a brief mention of plant uses.
].
Properties
| Medicinal Rating |  |
| Habit | Biennial/Perennial |
| Height | 2.00 m |
| Pollinators | Bees, hoverFlies |
| Cultivation Status | Wild |
Cultivation Details
Dormant plants are hardy to about -25°c[
187- Title
- Perennials. Volumes 1 and 2.
- Publication
-
- Author
- Phillips. R. & Rix. M.
- Publisher
- Pan Books
- Year
- 1991
- ISBN
- 0-330-30936-9
- Description
- Photographs of over 3,000 species and cultivars of ornamental plants together with brief cultivation notes, details of habitat etc.
].
Succeeds in an ordinary medium soil in sun or shade[
111- Title
- Popular Hardy Perennials.
- Publication
-
- Author
- Sanders. T. W.
- Publisher
- Collingridge
- Year
- 1926
- ISBN
- -
- Description
- A fairly wide range of perennial plants that can be grown in Britain and how to grow them.
]. Requires a moist soil[
1- Title
- RHS Dictionary of Plants plus Supplement. 1956
- Publication
-
- Author
- F. Chittendon.
- Publisher
- Oxford University Press
- Year
- 1951
- ISBN
- -
- Description
- Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaced in 1992 by a new dictionary (see [200]).
]. Prefers a well-drained soil[
188- Title
- The RHS Gardener's Encyclopedia of Plants and Flowers
- Publication
-
- Author
- Brickell. C.
- Publisher
- Dorling Kindersley Publishers Ltd.
- Year
- 1990
- ISBN
- 0-86318-386-7
- Description
- Excellent range of photographs, some cultivation details but very little information on plant uses.
].
This species is a biennial or short-lived perennial[
200- Title
- The New RHS Dictionary of Gardening. 1992.
- Publication
-
- Author
- Huxley. A.
- Publisher
- MacMillan Press
- Year
- 1992
- ISBN
- 0-333-47494-5
- Description
- Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
].
Some named forms have been selected for their ornamental value[
200- Title
- The New RHS Dictionary of Gardening. 1992.
- Publication
-
- Author
- Huxley. A.
- Publisher
- MacMillan Press
- Year
- 1992
- ISBN
- 0-333-47494-5
- Description
- Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
].
Members of this genus are rarely if ever troubled by browsing deer[
233- Title
- Perennial Garden Plants
- Publication
-
- Author
- Thomas. G. S.
- Publisher
- J. M. Dent & Sons, London.
- Year
- 1990
- ISBN
- 0 460 86048 8
- Description
- A concise guide to a wide range of perennials. Lots of cultivation guides, very little on plant uses.
].
Edible Uses
None known
Medicinal
An infusion of the roots has been used in the treatment of colds, dropsy and worms in children[
257- Title
- Native American Ethnobotany
- Publication
-
- Author
- Moerman. D.
- Publisher
- Timber Press. Oregon.
- Year
- 1998
- ISBN
- 0-88192-453-9
- Description
- Very comprehensive but terse guide to the native uses of plants. Excellent bibliography, fully referenced to each plant, giving a pathway to further information. Not for the casual reader.
]. A warm infusion of the root has been used as a wash on sores and snake bites[
257- Title
- Native American Ethnobotany
- Publication
-
- Author
- Moerman. D.
- Publisher
- Timber Press. Oregon.
- Year
- 1998
- ISBN
- 0-88192-453-9
- Description
- Very comprehensive but terse guide to the native uses of plants. Excellent bibliography, fully referenced to each plant, giving a pathway to further information. Not for the casual reader.
]. The ooze from the roots has been used as drops to treat earaches[
257- Title
- Native American Ethnobotany
- Publication
-
- Author
- Moerman. D.
- Publisher
- Timber Press. Oregon.
- Year
- 1998
- ISBN
- 0-88192-453-9
- Description
- Very comprehensive but terse guide to the native uses of plants. Excellent bibliography, fully referenced to each plant, giving a pathway to further information. Not for the casual reader.
].
Most membes of this genus are rich sources of phytochemicals that may offer potential for pharmaceutical or other uses[
270- Title
- Flora of N. America
- Publication
-
- Author
-
- Website
- http://flora.huh.harvard.edu/fna/
- Publisher
-
- Year
- 0
- ISBN
-
- Description
- An on-line version of the flora with an excellent description of the plant including a brief mention of plant uses.
].
Other Uses
A yellow dye is obtained from the flowers[
257- Title
- Native American Ethnobotany
- Publication
-
- Author
- Moerman. D.
- Publisher
- Timber Press. Oregon.
- Year
- 1998
- ISBN
- 0-88192-453-9
- Description
- Very comprehensive but terse guide to the native uses of plants. Excellent bibliography, fully referenced to each plant, giving a pathway to further information. Not for the casual reader.
].
Propagation
Seed - sow mid spring in a greenhouse. Only just cover the seed. Germination should take place within 2 weeks, prick out the seedlings into individual pots when they are large enough to handle and plant them out in the summer[
K- Title
- Plants for a Future
- Author
- Ken Fern
- Description
- Notes from observations, tasting etc at Plants For A Future and on field trips.
]. The seed can also be sown in situ[
111- Title
- Popular Hardy Perennials.
- Publication
-
- Author
- Sanders. T. W.
- Publisher
- Collingridge
- Year
- 1926
- ISBN
- -
- Description
- A fairly wide range of perennial plants that can be grown in Britain and how to grow them.
].
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Useful Temperate Plants Database 2016 by
Ken Fern,
web interface by
Ajna Fern
with help from
Richard Morris.
