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Polemonium caeruleum
Polemonium caeruleum
Garden Diary

Date purchased or acquired:

Where acquired:

Location in the garden:


The next time you are buying perennials please look for our helpful labels and blue pots, and remember "The best perennials come out of the blue"!

Polemonium caeruleum

Jacob’s Ladder

USDA Zone: 2-9

Plant number: 1.427.050

An easy perennial, especially for beginning gardeners. Plants form a lush mound of deep green, ferny foliage, bearing upright stems with star-shaped blue or white flowers, held in small heads beginning in late spring. The flowers are similar to Phlox, and good as a cut flower. Tends to self seed prolifically, but cutting off the spent flower heads will help to prevent this. Evergreen in mild winter regions. Easily divided in early spring or fall.

Further details for
Polemonium caeruleum

Optimal Growing
Appearance and
Sun Exposure
  Full Sun or
  Partial Shade
Soil Type
  Normal or
  Sandy or
Soil pH
  Neutral or
  Alkaline or
Soil Moisture
  Average or
Care Level
Flower Colour
  Deep Blue
  Light Blue
Blooming Time
  Early Summer
  Mid Summer
  Late Spring
Foliage Color
  Deep Green
Plant Uses & Characteristics
  Accent: Good Texture/Form
  Attracts Butterflies
  Attracts Hummingbirds
  Cut Flower
  Deer Resistant
   45-80 cm
   18-31 inches
   30-45 cm
   12-18 inches
Foot Traffic
Growth Rate
Disclaimer: This information is presented for reference only. This plant is not currently part of our Heritage Perennials lineup.