Photo by Melody

PlantFiles: Northern Jacob's Ladder
Polemonium boreale

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Family: Polemoniaceae (po-le-moh-nee-AY-see-ee) (Info)
Genus: Polemonium (po-le-MOH-nee-um) (Info)
Species: boreale (bor-ee-AY-lee) (Info)

2 members have or want this plant for trade.

Category:
Perennials

Height:
6-12 in. (15-30 cm)

Spacing:
12-15 in. (30-38 cm)

Hardiness:
USDA Zone 3a: to -39.9 C (-40 F)
USDA Zone 3b: to -37.2 C (-35 F)
USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:
Sun to Partial Shade

Danger:
Unknown - Tell us

Bloom Color:
Blue-Violet

Bloom Time:
Late Spring/Early Summer
Mid Summer

Foliage:
Herbaceous

Other details:
Unknown - Tell us

Soil pH requirements:
Unknown - Tell us

Patent Information:
Unknown - Tell us

Propagation Methods:
Unknown - Tell us

Seed Collecting:
Unknown - Tell us

Click thumbnail
to view:

By Todd_Boland
Thumbnail #1 of Polemonium boreale by Todd_Boland

Profile:

1 positive
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive mbhoakct76 On May 11, 2008, mbhoakct76 from Winsted, CT wrote:

I actually hated this when my boyfreind first planted it - it was burned from the sun and looked a bit like a weed to me , but this year it proved itself hardy in zone 5 and came back beautifully. Its now in full shade and i would almost buy a few more.

Regional...

This plant has been said to grow in the following regions:

Winsted, Connecticut
Thornton, Illinois
West Goshen, Pennsylvania



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