Rudbeckia hirta
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Rudbeckia hirta

black-eyed Susan

  family asteraceae 
  genus rudbeckia 

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Genus  Rudbeckia Species  hirta Variety  Cultivar  Common names  coneflower   black-eyed Susan Family  ASTERACEAE Specimen number  S11797 Data source  ColorNat p13;HtZn p164;Xeri p276
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' - 3' Overall spread   
Sunshine  Various Water  No extra water Optimal soil texture  Various Acceptable soil pH  Soil pH 06-07 USDA hardiness  USDA zones 04a-09b AHS heat zones  Heat zones 09-02 Sunset climate zones  Not classified
Suitable for gardens  yes Nursery  Unknown Compost  no Size at acquisition  Unknown Garden location  Unknown Garden notes  This plant is often used as cut flowers. This whole plant as well as the flowers and the petals and the leaves has been used in traditional fabric dyeing. A range of possible colors can be produced by Rudbeckia hirta including pale yellow, green, greenish gold, golden yellow and olive green. It is traditionally used to dye wool. (The mordants used for fixing the dye include: alum, chrome, iron.) Coneflower (also known as black-eyed Susan) can survive very cold winters with annual averages as low as -30� Fahrenheit. This plant needs summer days with high heat. This species requires no extra water once established.
Special qualities
Tolerates drought  no Tolerates high humidity  no Tolerates seaside conditions  no Insect resistant  no Disease resistant  no Deer resistant  no Best uses  Cut flowers 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  Medicinal parts  Has medicinal uses  no Do not self-administer  no Do no use if pregnant  no Legally restricted  no Toxicity precautions  Medicinal notes 
Traditional uses
Parts used  Traditional uses  Contemporary uses  Fragrance  Fragrance parts  Fragrance intensity    Fragrance category    Dye parts  Whole plant   Flowers   Petals   Leaves Dye color  pale yellow,green,greenish gold,golden yellow,olive green
Propagule  Various Pollination method    Planting style    Crop spacing    Row spacing    Cold frame  Planting period    Harvesting period    Frost tolerance    Heat requirement  Warm Fertilizer  Typical Time to harvest 
Is edible  no Culinary uses  Nutritional value  Edible parts  Description of edible parts Flavor / texture 
Horticulture notes  It requires warm days for good production.
Tag needs printing  no Collection notes  Rudbeckia hirta has an annual life cycle. Flowers: Coneflower (locally known in some parts as black-eyed Susan) has sunshine like rays of petals surrounding dark centers; borne in abundance. The flowers are usually either yellow or gold with prominent chocolate and black accents.

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Last reviewed November 01, 2004   


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