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Polemonium Species, Northern Jacob's Ladder

Polemoniumboreale

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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

Synonym

Polemonium nudipedum

Sun Exposure

Sun to Partial Shade

Foliage

Herbaceous

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)

Danger

Unknown - Tell us

Bloom Color

Blue-Violet

Bloom Time

Late Spring/Early Summer

Mid Summer

Other Details

Gardener's Notes:

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mbhoakct76

Winsted, CT | May 2008 | positive

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 ...Read More

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Polemonium Species, Northern Jacob's Ladder

Polemoniumboreale

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