Jacob's Ladder 'Snow & Sapphires'

Polemonium caeruleum

Family: Polemoniaceae (po-le-moh-nee-AY-see-ee) (Info)
Genus: Polemonium (po-le-MOH-nee-um) (Info)
Species: caeruleum (see-ROO-lee-um) (Info)
Cultivar: Snow & Sapphires
Additional cultivar information:(PP13441, aka Snow and Sapphires)
Hybridized by Mcdonald-Heims
Registered or introduced: 2001



Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Requires consistently moist soil; do not let dry out between waterings

Where to Grow:

Unknown - Tell us


12-18 in. (30-45 cm)

18-24 in. (45-60 cm)

24-36 in. (60-90 cm)


12-15 in. (30-38 cm)


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)

Sun Exposure:

Light Shade

Partial to Full Shade

Full Shade


Unknown - Tell us

Bloom Color:

Medium Blue


White/Near White

Bloom Time:

Mid Summer



Other details:

Unknown - Tell us

Soil pH requirements:

Unknown - Tell us

Patent Information:


Propagation Methods:

By dividing the rootball

From seed; sow indoors before last frost

From seed; direct sow after last frost

Seed Collecting:

Bag seedheads to capture ripening seed

Wear gloves to protect hands when handling seeds

Properly cleaned, seed can be successfully stored


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

Anchorage, Alaska

Machesney Park, Illinois

Roscoe, Illinois

Fishers, Indiana

Ann Arbor, Michigan

Grand Rapids, Michigan

South Lyon, Michigan

Akron, Ohio

Haviland, Ohio

Lexington, Virginia

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Gardeners' Notes:

No details have been posted.