Illinois' Best


Polemonium caeruleum 'Blue Pearl'

A biblical name for a heavenly plant

Jacob's ladder grows up to 2' in height. The attractive foliage is divided, with 19 to 27 leaflets per leaf. Drooping dainty blue flowers hover over the plant in early summer. Use it in the naturalistic garden. 

Polemonium caeruleum
Jacob's ladder
Family: Phlox (Polemoniaceae)
Type: Perennial

Mature Size:
1-2 feet

Shape:
mounded
  Flower Color:
blue
  Bloom Season:
May-June
Exposure:
full sun to partial shade
  Soil Moisture:
moist
  Zones:
2-7
attracts butterflies
resistant to deer
  Landscape Use:
bedding or border
understory
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With the support of the North Suburban Library System and the Illinois State Library,
funded by the Library Services and Technology Act, 1998.