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Polemonium caeruleum

Also called Greek Valerian


Polemonium caeruleum - Jacob's Ladder

More About Polemonium caeruleum

  • Upright, clump forming habit
  • Cup-shaped flowers droop in loose clusters
  • Blue flowers have contrasting, yellow stamens
  • Mid-green leaves are made up of many, lance-shaped leaflets
  • Bloom Time: Early to midsummer
  • Flower Height: 75 cm
  • Foliage Height: 50 cm

Zone:

2

Height:

45-50 cm

Spread:

50-60 cm

Colour:

Blue

Jacob's Ladder Growing and Maintenance Tips

Naturalizes (self-seeds) in optimum, growing conditions. Grows best in an average to moist, cool soil in partial sun and in a location protected from the hot, afternoon sun. Deadheading will promote sporadic blooms throughout the summer and into September. 

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Polemonium caeruleum Characteristics

Partial Sun/Shade
Partial Sun/Shade
Full Shade
Full Shade
Deer Resistant
Deer Resistant
Cut Flower/Foliage
Cut Flower/Foliage

Soil Moisture

Moist to Average
Well-drained

Growth Rate

Medium

Flowering Time

Summer

Habit

Upright
Clumping

Foliage Color

Green

Landscape uses

Woodland/woods edge
Naturalizing

 Suitable Substitutions for Polemonium caeruleum

Get more info on Polemonium caeruleum 'Album'

Polemonium caeruleum 'Album'

White Jacob's Ladder