Polemonium occidentale
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Polemonium occidentale

Jacob's-ladder
western polemonium

  family polemoniaceae 
  genus polemonium 

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Identification
Genus  Polemonium Species  occidentale Variety  Cultivar  Common names  Jacob's-ladder   western polemonium Family  POLEMONIACEAE Specimen number  S11506 Data source  HtZn p157
 
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  4" - 3' Overall spread   
 
Climate
Sunshine  Full sun to partial shade Water  Well drained Optimal soil texture  Rocky Acceptable soil pH  Neutral USDA hardiness  USDA zones 03a-09b AHS heat zones  Heat zones 08-01 Sunset climate zones  Not classified
 
Garden
Suitable for gardens  yes Nursery  Unknown Compost  no Size at acquisition  Unknown Garden location  Unknown Garden notes  Polemonium occidentale can survive very cold winters with annual averages as low as -40 Fahrenheit. Jacob's-ladder (also known as western polemonium) needs summer days with high heat. This plant likes soils that are rocky. This species does best in full sun to partial shade. It prefers well drained 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    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  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 
 
Herbarium
Tag needs printing  no Collection notes  Polemonium occidentale is a perennial. Leaves: Jacob's-ladder (locally known in some parts as western polemonium) has compound leaves. Flowers: This plant has cup shaped flowers that face upwards. Flowers begin in June and don't stop until August. The blossoms are usually an aquamarine color.

Page 3728 of 4998

Last reviewed November 01, 2004   

 

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