Polemoniaceae
Polemonium occidentale subsp. occidentale
Polemonium occidentale subsp. occidentale
Also known as Polemonium intermedium, Polemonium occidentale var. intermedium, Polemonium caeruleum var. pterospermum, Polemonium caeruleum subsp. amygdalinum
Flowering Plants · Native Plants · Native Perennial · Western Wildflower · Part Shade · Moist Soil · Polemonium · Mountain Plant · Blue Flowers · Pollinator Garden · Woodland Garden · Jacob'S Ladder
Western Jacob's Ladder is a tough native perennial native to mountain meadows and moist slopes of western North America. Plant it in a partly shaded spot with rich, reliably moist soil for best results, and divide clumps every few years to maintain vigor. Its airy, pinnate foliage and clusters of lavender-blue flowers make it a lovely addition to a native or woodland garden.
Growing conditions
The details behind the basics
- Daily light
- 4 hours
- Watering
- Water thoroughly to keep soil evenly moist; do not allow to dry out completely · Every 5-7 days
- Maintenance
- Moderate
- Soil
- loam
- Soil pH
- 4.6–7
- Temperature
- -40°F to 80°F
- Cycle
- Perennial
Hardiness
USDA 3a-8b
Form & growth
Mature size and habit
- Mature height
- 18 in – 3 ft
- Spread
- 2 ft
- Spacing
- 18 in apart
- Growth rate
- Moderate
- Root depth
- Medium
- Flowers
- Yes
- Foliage
- Medium
Ecology & origin
Where it belongs and what it brings
- Native to
- Alberta, British Columbia, California, Colorado, Idaho, Montana, Nevada, New Mexico, Oregon, Utah, Washington, Wyoming
- Attracts
- Bees, Butterflies, Hummingbirds
Sources: trefle, usda
More Polemonium
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Polemonium acutiflorum
Polemonium acutiflorum
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Leafy jacob's-ladder
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Western jacob's-ladder
Polemonium occidentale
Partial Sun · Moderate · Moderate
Polemonium foliosissimum var. foliosissimum
Polemonium foliosissimum var. foliosissimum
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