Polemonium, Variegated Jacob's Ladder
Polemoniumcaeruleum 'Blanjou'

Category
Perennials

Water Requirements
Average Water Needs; Water regularly; do not overwater

Sun Exposure
Sun to Partial Shade
Light Shade

Foliage
Grown for foliage
Herbaceous
Good Fall Color

Foliage Color

Height
18-24 in. (45-60 cm)

Spacing
18-24 in. (45-60 cm)

Hardiness
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)

Where to Grow

Danger

Bloom Color
Dark Blue

Bloom Characteristics

Bloom Size

Bloom Time
Late Spring/Early Summer
Mid Summer

Other details

Soil pH requirements
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information
Patented

Propagation Methods
By dividing the rootball

Seed Collecting
Properly cleaned, seed can be successfully stored
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed