trefle.io · Taken Jun 15, 2020 by franck lohner (cc-by-sa)
Polemoniaceae
Western jacob's-ladder
Polemonium occidentale
Also known as Polemonium caeruleum var. occidentale, Polemonium caeruleum subsp. occidentale, Western polemonium, Showy jacob's-ladder
Flowering Plants · Native Plants · Wildflower · Shade Garden · Woodland · Native Plant · Perennial · Blue Flowers · Pollinator · Mountain Plant · Western Native
Western Jacob's-ladder thrives in cool, moist conditions with partial shade, making it ideal for woodland or shade gardens. Water regularly to maintain consistently moist soil, especially during warm summer months. It pairs beautifully with ferns and hostas and benefits from a layer of organic mulch to retain moisture.
Growing conditions
The details behind the basics
- Daily light
- 4 hours
- Watering
- Water thoroughly to keep soil consistently moist but not waterlogged · Every 5-7 days
- Maintenance
- Moderate
- Soil
- loam
- Soil pH
- 4.6–7
- Temperature
- -25°F to 95°F
- Cycle
- Perennial
- Propagation
- Seed, Division, Cutting
Hardiness
USDA 4b-9b
Form & growth
Mature size and habit
- Mature height
- 12 in – 4 ft
- Spread
- 4 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, Minnesota, Montana, Nevada, New Mexico, Oregon, Utah, Washington, Wisconsin, Wyoming
- Attracts
- Bees, Butterflies, Hummingbirds
Sources: trefle, usda
More Polemonium
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Polemonium foliosissimum var. alpinum
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Polemonium occidentale subsp. lacustre
Polemonium occidentale subsp. lacustre
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