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Centaurea nigra
  • Black Knapweed

a perennial member of the Centaurea 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
  • no shade
    No 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,very alkaline
    Acid to Very alkaline
    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
  • 5
    Zone 5
    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
Centaurea nigra has 0 edible uses listed
Centaurea nigra has 0 medicinal uses listed

Uses

Edible uses

Notes

Flower petals - raw. Added to salads[1].

Flowers

Unknown use

Material uses

There are no material uses listed for Centaurea nigra.

Medicinal uses(Warning!)

The roots and seeds are diaphoretic, diuretic, tonic and vulnerary[2][3]. The plant once had a very high reputation as a healer of wounds[2].

Unknown part

Diaphoretic
Diuretic
Tonic

Ecology

Ecosystem niche/layer

Ecological Functions

Nothing listed.

Forage

Nothing listed.

Shelter

Nothing listed.

Propagation

Seed - sow April in a cold frame. When they are large enough to handle, prick the seedlings out into individual pots and plant them out into their permanent positions in the summer.

Division in autumn. Very easy, larger clumps can be replanted direct into their permanent positions, though it is best to pot up smaller clumps and grow them on in a cold frame until they are rooting well. Plant them out in the summer or following spring. This should be done at least once every three years in order to maintain the vigour of the plant.

Basal cuttings in spring. Harvest the shoots when they are about 10 - 15cm long with plenty of underground stem. Pot them up into individual pots and keep them in light shade in a cold frame or greenhouse until they are rooting well. Plant them out in the summer.

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



Cultivation

Succeeds in ordinary garden soil[4][5]. Prefers a well-drained fertile soil and a sunny position[5]. Tolerates dry, low fertility and alkaline soils[5]. Established plants are tolerant of considerable neglect, thriving and even self-sowing in dense weed growth[K]. Members of this genus are rarely if ever troubled by browsing deer[6].

Crops

Problems, pests & diseases

Associations & Interactions

There are no interactions listed for Centaurea nigra. 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 Centaurea nigra.

Descendants

Cultivars

Varieties

None listed.

Subspecies

None listed.

Full Data

This table shows all the data stored for this plant.

Taxonomy
Binomial name
Centaurea nigra
Genus
Centaurea
Family
Compositae
Imported References
Edible uses
[1]
Medicinal uses
[2][3]
Material uses & Functions
Botanic
[7][5]
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
5
Heat Zone
?
Water
moderate
Sun
full sun
Shade
no shade
Soil PH
acid, neutral, alkaline, very alkaline
Soil Texture
sandy, loamy, clay
Soil Water Retention
well drained
Environmental Tolerances
  • Drought
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
perennial
Growth Rate
?
Mature Size
0.6 x meters
Fertility
self fertile
Pollinators
Bees, Flies, Lepidoptera, Self
Flower Colour
?
Flower Type
hermaphrodite

"image:Centaurea nigra Sturm24.jpg|248px" cannot be used as a page name in this wiki. "image:Centaurea nigra Sturm24.jpg|248px" cannot be used as a page name in this wiki. "image:Centaurea nigra Sturm24.jpg|248px" cannot be used as a page name in this wiki.

"image:Centaurea nigra Sturm24.jpg|248px" cannot be used as a page name in this wiki. "image:Centaurea nigra Sturm24.jpg|248px" cannot be used as a page name in this wiki.


"image:Centaurea nigra Sturm24.jpg|248px" cannot be used as a page name in this wiki.

"image:Centaurea nigra Sturm24.jpg|248px" cannot be used as a page name in this wiki.

"image:Centaurea nigra Sturm24.jpg|248px" cannot be used as a page name in this wiki., "image:Centaurea nigra Sturm24.jpg|248px" cannot be used as a page name in this wiki., "image:Centaurea nigra Sturm24.jpg|248px" cannot be used as a page name in this wiki., "image:Centaurea nigra Sturm24.jpg|248px" cannot be used as a page name in this wiki. "image:Centaurea nigra Sturm24.jpg|248px" cannot be used as a page name in this wiki., "image:Centaurea nigra Sturm24.jpg|248px" cannot be used as a page name in this wiki., "image:Centaurea nigra Sturm24.jpg|248px" cannot be used as a page name in this wiki. "image:Centaurea nigra Sturm24.jpg|248px" cannot be used as a page name in this wiki. "image:Centaurea nigra Sturm24.jpg|248px" cannot be used as a page name in this wiki."image:Centaurea nigra Sturm24.jpg|248px" cannot be used as a page name in this wiki.






References

  1. ? 1.01.1 Facciola. S. Cornucopia - A Source Book of Edible Plants. Kampong Publications ISBN 0-9628087-0-9 (1990-00-00)
  2. ? 2.02.12.2 Grieve. A Modern Herbal. Penguin ISBN 0-14-046-440-9 (1984-00-00)
  3. ? 3.03.1 Usher. G. A Dictionary of Plants Used by Man. Constable ISBN 0094579202 (1974-00-00)
  4. ? F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press (1951-00-00)
  5. ? 5.05.15.25.3 Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press ISBN 0-333-47494-5 (1992-00-00)
  6. ? Thomas. G. S. Perennial Garden Plants J. M. Dent & Sons, London. ISBN 0 460 86048 8 (1990-00-00)
  7. ? Clapham, Tootin and Warburg. Flora of the British Isles. Cambridge University Press (1962-00-00)

"image:Centaurea nigra Sturm24.jpg|248px" cannot be used as a page name in this wiki.

Retrieved from "https://practicalplants.org/w/index.php?title=Centaurea_nigra&oldid=76078"
Facts about "Centaurea nigra"RDF feed
Article is incompleteYes +
Article requires citationsNo +
Article requires cleanupYes +
Belongs to familyCompositae +
Belongs to genusCentaurea +
Has binomial nameCentaurea nigra +
Has common nameBlack Knapweed +
Has drought toleranceTolerant +
Has edible partFlowers +
Has edible useUnknown use +
Has environmental toleranceDrought +
Has fertility typeSelf fertile +, Bees +, Flies +, Lepidoptera + and Self +
Has flowers of typeHermaphrodite +
Has hardiness zone5 +
Has imageCentaurea nigra Sturm24.jpg +
Has lifecycle typePerennial +
Has mature height0.6 +
Has medicinal partUnknown part +
Has medicinal useDiaphoretic +, Diuretic + and Tonic +
Has primary imageCentaurea nigra Sturm24.jpg +
Has search namecentaurea nigra + and black knapweed +
Has shade toleranceNo shade +
Has soil ph preferenceAcid +, Neutral +, Alkaline + and Very alkaline +
Has soil texture preferenceSandy +, Loamy + and Clay +
Has soil water retention preferenceWell drained +
Has sun preferenceFull sun +
Has taxonomic rankSpecies +
Has taxonomy nameCentaurea nigra +
Has water requirementsmoderate +
Is taxonomy typeSpecies +
PFAF cultivation notes migratedNo +
PFAF edible use notes migratedNo +
PFAF material use notes migratedYes +
PFAF medicinal use notes migratedNo +
PFAF propagation notes migratedNo +
PFAF toxicity notes migratedYes +
Tolerates nutritionally poor soilNo +
Uses mature size measurement unitMeters +
Has subobjectThis property is a special property in this wiki.Centaurea nigra +, Centaurea nigra +, Centaurea nigra + and Centaurea nigra +