Centaurea cyanus
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Centaurea cyanus

bachelor's button

  family asteraceae 
  genus centaurea 

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Genus  Centaurea Species  cyanus Variety  Cultivar  Common names  cornflower   bachelor's button Family  ASTERACEAE Specimen number  S11708 Data source  HtZn p92;MedPl p183;Frgnt p90;Xeri p277
Life cycle
Life form  Terrestrial Life cycle  Annual Life span  1 year Annual cycle  Not applicable Stature  Various Growth form  Not applicable Growth habit  Various Overall height  1' 8" Overall spread   
Sunshine  Various Water  Moist Optimal soil texture  Loam Acceptable soil pH  Neutral USDA hardiness  USDA zones 03a-09b AHS heat zones  Heat zones 09-01 Sunset climate zones  Not classified
Suitable for gardens  yes Nursery  Unknown Compost  no Size at acquisition  Unknown Garden location  Unknown Garden notes  The flowers of Centaurea cyanus have a faintly sweet aroma. Bachelor's button (also known as cornflower) can survive very cold winters with annual averages as low as -40� Fahrenheit. This plant needs summer days with high heat. This species does well in loamy soils. It needs soil that is moist.
Special qualities
Tolerates drought  no Tolerates high humidity  no Tolerates seaside conditions  no Insect resistant  no Disease resistant  no Deer resistant  no Best uses    Symbiosis  Attracts butterflies  no Attracts hummingbirds  no Autumn foliage  no Colorful berries  no Desirable qualities    Other interest    Other interest color  Other interest period   
Adverse factors
Common pests  Poisonous parts  Poisonous indications  Internal poison  no Dermatologic poison  no Livestock poison  no Mechanical injury  no Hay fever pollen    Hay fever season    Adverse qualities   
Herbal medicine
Medicinal properties  bitter   stimulant   laxative   antirheumatic Medicinal parts  Flowers   Seeds   Leaves Has medicinal uses  yes Do not self-administer  no Do no use if pregnant  no Legally restricted  no Toxicity precautions  Medicinal notes  Centaurea cyanus has traditionally been used in many herbal remedies including: as a bitter, as a stimulant, as a laxative and as an antirheumatic. (More are listed in the medicinal properties section.) The flowers as well as the seeds and the leaves are used in herbal preparations.
Traditional uses
Parts used  Traditional uses  Contemporary uses  Fragrance  mild scent only noticeable up close Fragrance parts  Flowers Fragrance intensity  Faint Fragrance category  Faintly sweet Dye parts  Dye color 
Propagule  Seed Pollination method    Planting style    Crop spacing    Row spacing    Cold frame  Planting period    Harvesting period    Frost tolerance    Heat requirement  Cool Fertilizer  Typical Time to harvest 
Is edible  no Culinary uses  Nutritional value  Edible parts  Description of edible parts Flavor / texture 
Horticulture notes  It does not necessarily require warm days for good production. Centaurea cyanus is typically propagated by seed.
Tag needs printing  no Collection notes  Centaurea cyanus has an annual life cycle. Blossoms in such colors as pink, blue, violet, purple and white are common.

Page 989 of 4998

Last reviewed November 01, 2004   


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