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Centaurea calcitrapa - L.

Common Name Common Star Thistle, Red star-thistle
Family Asteraceae or Compositae
USDA hardiness Coming soon
Known Hazards None known
Habitats Waysides and waste places on sandy, gravelly and chalky soils[17].
Range Europe. Probably introduced in Britain[17].
Edibility Rating    (1 of 5)
Other Uses    (0 of 5)
Weed Potential No
Medicinal Rating    (1 of 5)
Care
Well drained soil Moist Soil Full sun
Centaurea calcitrapa Common Star Thistle, Red star-thistle


http://commons.wikimedia.org/wiki/File:Centaurea_calcitrapa_Sturm28.jpg
Centaurea calcitrapa Common Star Thistle, Red star-thistle
http://commons.wikimedia.org/wiki/File:Centaurea_calcitrapa_800.jpg

 

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Summary


Physical Characteristics

 icon of manicon of flower
Centaurea calcitrapa is a BIENNIAL growing to 0.6 m (2ft). It is in flower from July to September, and the seeds ripen from August to October. The species is hermaphrodite (has both male and female organs) and is pollinated by Bees, flies, Lepidoptera (Moths & Butterflies). The plant is self-fertile.
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils, prefers well-drained soil and can grow in nutritionally poor soil. Suitable pH: acid, neutral and basic (alkaline) soils and can grow in very alkaline soils.
It cannot grow in the shade. It prefers dry or moist soil and can tolerate drought.

Synonyms

Habitats

 Cultivated Beds;

Edible Uses

Edible Parts: Leaves.
Edible Uses:

Leaves and young stems - raw or cooked[2, 46, 61, 105, 177].

Medicinal Uses



Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.

Diuretic.

The powdered seeds are drunk as a remedy for stone[4, 240]. The powdered root is said to be a cure for fistula and gravel[4, 240].

Other Uses

None known

Cultivation details

Succeeds in ordinary garden soil[1, 200]. Prefers a well-drained fertile soil and a sunny position[200]. Tolerates dry, low fertility and alkaline soils[200]. Members of this genus are rarely if ever troubled by browsing deer[233].

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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 in the summer. If you have sufficient seed, it can also be sown in situ during August/September.

Other Names

If available other names are mentioned here

Found In

Countries where the plant has been found are listed here if the information is available

Weed Potential

Right plant wrong place. We are currently updating this section. Please note that a plant may be invasive in one area but may not in your area so it’s worth checking.

Conservation Status

IUCN Red List of Threatened Plants Status :

Related Plants
Latin NameCommon NameEdibility RatingMedicinal Rating
Centaurea acaulis 00
Centaurea chamaerhaponticum 20
Centaurea cyanusCornflower, Garden cornflower, Blue Bottle, Cornflower22
Centaurea depressaIranian knapweed20
Centaurea ibericaIberian Star Thistle, Iberian knapweed12
Centaurea jaceaBrown Knapweed11
Centaurea melitensisMaltese Star Thistle01
Centaurea montanaMountain Cornflower, Perennial cornflower, Mountain Bluet02
Centaurea nigraBlack Knapweed, Lesser knapweed12
Centaurea raphanina 10
Centaurea scabiosaGreater Knapweed02
Centaurea solstitialisSt. Barnaby's Thistle, Yellow star-thistle11

 

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Expert comment

Author

L.

Botanical References

17

Links / References

For a list of references used on this page please go here

Readers comment

Cynthia/Northern California   Tue Jul 8 05:01:51 2003

I'm looking up star thistle to get rid of it and youre saying its useful?? What do I do with it??

   Fri May 20 23:18:30 2005

Check out this website and please don't encourage people to plant this! http://www.efn.org/~ipmpa/Noxpstar.html

   Fri May 20 23:21:59 2005

This website is better: http://ucce.ucdavis.edu/datastore/detailreport.cfm?usernumber=26&surveynumber=182

Donald Scott   Thu Oct 26 2006

The U.S department of agriculture has calssified this plant as a "noxious" weed Due to its invasiveness, length, durability and persistence of the spines surrounding the ovaries and due to suggestions that it contains a bovine pathogen. I would stick to Spinnach.

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Subject : Centaurea calcitrapa  
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