This is an archived copy of this article, recovered after a server failure in January 2022.

Some links may be broken, and editing is disabled. We are working to bring back full functionality.

Rudbeckia hirta
  • Black Eyed Susan

a biennial or perennial member of the Rudbeckia genus in the family Compositae.

248px
Niche
  • Unknown
    Unknown
    The ecosystem niches for this plant are unknown. Do you know them? Click the edit button to add them!
Functions
  • None
    None
    There are no functions defined for this plant. Do you know of some? Click the edit button to add them!
Light
  • Full sun
    Full sun
    The amount of sun exposure that a plant prefers in ideal conditions.
    Key
  • light shade
    Light shade
    The amount of shade a plant will tolerate without adverse health affects.
    Key
Water
  • Water Requirementsmoderate
    Moderate
    The amount of water a plant needs for healthy growth, relative to other plants.
    Key
Soil
  • acid,neutral,alkaline
    Unknown
    The PH range (acidity or alkilinity) of the growth medium ideal for healthy nutrient absorbtion.
    Key
  • Sandy to Clay
    The soil texture this plant prefers for optimal growth.
    Key
Cold & Heat
  • 4
    Zone 4
    The USDA Hardiness scale assigns plants a number from 1 to 12 representing the minimum temperature a plant can survive.
    Key
    0< -53.9ºC< -65ºF
    1-51.1ºC-60ºF
    2-45.6ºC-50F
    3-40ºC-40ºF
    4-34.4ºC-30ºF
    5-28.9ºC-20ºF
    6-23.3ºC-10ºF
    7-17.8ºC0ºF
    8-12.2C10ºF
    9-6.7ºC20ºF
    10-1.1ºC30ºF
    114.4ºC40ºF
    12> 10ºC> 5ºF
  • ?
    Unknown
    The AHS Heat scale assigns plants a number from 1 to 12 representing the number of days per year a plant requires a temperature exceeding 30ºC (86ºF).
    Key
    11
    21 - 7
    38 - 14
    415 - 30
    531 - 45
    646 - 60
    761 - 90
    891 - 120
    9121 - 150
    10151 - 180
    11181 - 210
    12181 - 210

Uses

Toxic parts

This plant is reputed to be poisonous to cattle, sheep and pigs[1].

Edible uses

There are no edible uses listed for Rudbeckia hirta.

Material uses

A yellow dye is obtained from the flowers[2].
There are no material uses listed for Rudbeckia hirta.

Medicinal uses(Warning!)

An infusion of the roots has been used in the treatment of colds, dropsy and worms in children[2]. A warm infusion of the root has been used as a wash on sores and snake bites[2]. The ooze from the roots has been used as drops to treat earaches[2].
There are no medicinal uses listed for Rudbeckia hirta.

Ecology

Ecosystem niche/layer

Ecological Functions

Nothing listed.

Forage

Nothing listed.

Shelter

Nothing listed.

Propagation

Seed - sow April 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]. The seed can also be sown in situ[3].

Practical Plants is currently lacking information on propagation instructions of Rudbeckia hirta. Help us fill in the blanks! Edit this page to add your knowledge.



Cultivation

Succeeds in an ordinary medium soil in sun or shade[3]. Requires a moist soil[4]. Prefers a well-drained soil[5].

Dormant plants are hardy to about -25°c[6]. This species is a biennial or short-lived perennial[7]. Some named forms have been selected for their ornamental value[7].

Members of this genus are rarely if ever troubled by browsing deer[8].

Crops

Problems, pests & diseases

Associations & Interactions

There are no interactions listed for Rudbeckia hirta. Do you know of an interaction that should be listed here? edit this page to add it.

Polycultures & Guilds

There are no polycultures listed which include Rudbeckia hirta.

Descendants

Cultivars

Varieties

None listed.

Subspecies

None listed.

Full Data

This table shows all the data stored for this plant.

Taxonomy
Binomial name
Rudbeckia hirta
Genus
Rudbeckia
Family
Compositae
Imported References
Edible uses
Medicinal uses
[2]
Material uses & Functions
[2]
Botanic
[9][7]
Propagation
Cultivation
Environment
Cultivation
Uses
Edible uses
None listed.
Material uses
None listed.
Medicinal uses
None listed.
Functions & Nature
Functions
Provides forage for
Provides shelter for
Environment
Hardiness Zone
4
Heat Zone
?
Water
moderate
Sun
full sun
Shade
light shade
Soil PH
acid, neutral, alkaline
Soil Texture
sandy, loamy, clay
Soil Water Retention
Environmental Tolerances
  • Strong wind
Ecosystems
Native Climate Zones
None listed.
Adapted Climate Zones
None listed.
Native Geographical Range
None listed.
Native Environment
None listed.
Ecosystem Niche
None listed.
Root Zone Tendancy
None listed.
Life
Deciduous or Evergreen
?
Herbaceous or Woody
?
Life Cycle
biennial, perennial
Growth Rate
?
Mature Size
2 x 0.5 meters
Fertility
?
Pollinators
Bees, Hoverflies
Flower Colour
?
Flower Type
hermaphrodite

"image:Rudbeckia hirta.JPG|248px" cannot be used as a page name in this wiki. "image:Rudbeckia hirta.JPG|248px" cannot be used as a page name in this wiki. "image:Rudbeckia hirta.JPG|248px" cannot be used as a page name in this wiki.

"image:Rudbeckia hirta.JPG|248px" cannot be used as a page name in this wiki. "image:Rudbeckia hirta.JPG|248px" cannot be used as a page name in this wiki.


"image:Rudbeckia hirta.JPG|248px" cannot be used as a page name in this wiki.

"image:Rudbeckia hirta.JPG|248px" cannot be used as a page name in this wiki.

"image:Rudbeckia hirta.JPG|248px" cannot be used as a page name in this wiki., "image:Rudbeckia hirta.JPG|248px" cannot be used as a page name in this wiki., "image:Rudbeckia hirta.JPG|248px" cannot be used as a page name in this wiki. "image:Rudbeckia hirta.JPG|248px" cannot be used as a page name in this wiki., "image:Rudbeckia hirta.JPG|248px" cannot be used as a page name in this wiki., "image:Rudbeckia hirta.JPG|248px" cannot be used as a page name in this wiki.

"image:Rudbeckia hirta.JPG|248px" cannot be used as a page name in this wiki."image:Rudbeckia hirta.JPG|248px" cannot be used as a page name in this wiki.






References

  1. ? Arnberger. L. P. Flowers of the Southwest Mountains. Southwestern Monuments Ass. (1968-00-00)
  2. ? 2.02.12.22.32.42.5 Moerman. D. Native American Ethnobotany Timber Press. Oregon. ISBN 0-88192-453-9 (1998-00-00)
  3. ? 3.03.1 Sanders. T. W. Popular Hardy Perennials. Collingridge (1926-00-00)
  4. ? F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press (1951-00-00)
  5. ? Brickell. C. The RHS Gardener's Encyclopedia of Plants and Flowers Dorling Kindersley Publishers Ltd. ISBN 0-86318-386-7 (1990-00-00)
  6. ? Phillips. R. & Rix. M. Perennials Volumes 1 and 2. Pan Books ISBN 0-330-30936-9 (1991-00-00)
  7. ? 7.07.17.2 Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press ISBN 0-333-47494-5 (1992-00-00)
  8. ? Thomas. G. S. Perennial Garden Plants J. M. Dent & Sons, London. ISBN 0 460 86048 8 (1990-00-00)
  9. ? Clapham, Tootin and Warburg. Flora of the British Isles. Cambridge University Press (1962-00-00)

Cite error: <ref> tag with name "PFAFimport-274" defined in <references> is not used in prior text.

"image:Rudbeckia hirta.JPG|248px" cannot be used as a page name in this wiki.

Retrieved from "https://practicalplants.org/w/index.php?title=Rudbeckia_hirta&oldid=80463"
Facts about "Rudbeckia hirta"RDF feed
Article is incompleteYes +
Article requires citationsNo +
Article requires cleanupYes +
Belongs to familyCompositae +
Belongs to genusRudbeckia +
Has binomial nameRudbeckia hirta +
Has common nameBlack Eyed Susan +
Has drought toleranceIntolerant +
Has environmental toleranceHigh wind +
Has fertility typeBees + and Hoverflies +
Has flowers of typeHermaphrodite +
Has hardiness zone4 +
Has imageRudbeckia hirta.JPG +
Has lifecycle typeBiennial + and Perennial +
Has mature height2 +
Has mature width0.5 +
Has primary imageRudbeckia hirta.JPG +
Has search namerudbeckia hirta + and black eyed susan +
Has shade toleranceLight shade +
Has soil ph preferenceAcid +, Neutral + and Alkaline +
Has soil texture preferenceSandy +, Loamy + and Clay +
Has sun preferenceFull sun +
Has taxonomic rankSpecies +
Has taxonomy nameRudbeckia hirta +
Has water requirementsmoderate +
Is taxonomy typeSpecies +
PFAF cultivation notes migratedNo +
PFAF edible use notes migratedYes +
PFAF material use notes migratedNo +
PFAF medicinal use notes migratedNo +
PFAF propagation notes migratedNo +
PFAF toxicity notes migratedNo +
Tolerates nutritionally poor soilNo +
Tolerates windYes +
Uses mature size measurement unitMeters +