Epilobium angustifolium
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Epilobium angustifolium

fireweed
willow herb

  family onagraceae 
  genus epilobium 

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Identification
Genus  Epilobium Species  angustifolium Variety  Cultivar  Common names  fireweed   willow herb Family  ONAGRACEAE Specimen number  S13775 Data source  Allergy p283;HtZn p110
 
Life cycle
Life form  Terrestrial Life cycle  Perennial Life span  3 - 10 years Annual cycle  Not applicable Stature  Flower Growth form  Not applicable Growth habit  Various Overall height  3' - 5' Overall spread   
 
Climate
Sunshine  Full sun Water  Dry to moist Optimal soil texture  Various Acceptable soil pH  Neutral USDA hardiness  USDA zones 02a-09b AHS heat zones  Heat zones 07-03 Sunset climate zones  Not classified
 
Garden
Suitable for gardens  yes Nursery  Unknown Compost  no Size at acquisition  Unknown Garden location  Unknown Garden notes  Be careful where you put this because of its invasive tendencies. Epilobium angustifolium can survive the coldest of winter climates with annual temperatures as low as -50� Fahrenheit. Fireweed (also known as willow herb) does very well with hot summer days. Full sun is best for growing this plant. It likes dry to moist soils.
 
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  Light Hay fever season  Jul 01 - Sep 30 Adverse qualities  Invasive
 
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  This anemophilous species has only a light pollen count during hay fever season. July to September is the usual season for causing hay-fever problems.
 
Traditional uses
Parts used  Traditional uses  Contemporary uses  Fragrance  Fragrance parts  Fragrance intensity    Fragrance category    Dye parts  Dye color 
 
Cultivation
Propagule  Various Pollination method    Planting style    Crop spacing    Row spacing    Cold frame  Planting period    Harvesting period    Frost tolerance    Heat requirement    Fertilizer  Typical Time to harvest 
 
Nutrition
Is edible  no Culinary uses  Nutritional value  Edible parts  Description of edible parts Flavor / texture 
 
Horticulture
Horticulture notes  Epilobium angustifolium is a wildflower that occurs throughout US.
 
Herbarium
Tag needs printing  no Collection notes  Epilobium angustifolium is a perennial. Flowers: Fireweed (locally known in some parts as willow herb) has spikes of small flowers atop semi-erect stems. Blossoms appear in June and continue through August. Typically the flowers are either lilac or purple.

Page 1733 of 4998

Last reviewed November 01, 2004   

 

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