Polemonium occidentale Greene
Western polemonium, Western Jacob's ladder
Polemoniaceae (Phlox Family)
USDA Symbol: POOC2
The leaves resemble long ladders; the genus is known by the common name Jacobs Ladder. Leafy Polemonium (P. foliosissimum), which grows from Idaho and Wyoming south to Arizona and New Mexico, is somewhat leafier than Western Polemonium, the upper leaves not much smaller than those at the base.
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Bloom InformationBloom Color: Blue
Bloom Time: Jun , Jul , Aug
DistributionUSA: CA , CO , ID , MN , MT , NV , OR , UT , WA , WI , WY
Native Distribution: B.C. & Alt., s. to CA & CO; mostly e. of the Cascades
Native Habitat: Wet, open conifer forests or meadow edges; 3000-11,000 ft.
Growing ConditionsWater Use: High
Light Requirement: Part Shade
Soil Moisture: Wet
CaCO3 Tolerance: Low
Soil Description: Wet to moist, well-drained soils.
BenefitConspicuous Flowers: yes
PropagationDescription: Propagate by division or seed.
Seed Collection: Not Available
Seed Treatment: Stratify.
Commercially Avail: yes
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Additional resourcesUSDA: Find Polemonium occidentale in USDA Plants
FNA: Find Polemonium occidentale in the Flora of North America (if available)
Google: Search Google for Polemonium occidentale
MetadataRecord Modified: 2010-04-25
Research By: TWC Staff