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The Plant Guide

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Jacob’s ladder

Polemonium caeruleum

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Polemonium caeruleum 'Bressingham Purple'

This North American native bears deep blue or occasionally white, bell-shaped blossoms in spring and possibly late summer if deadheaded. It grows from 1 to 3 feet tall. Use Jacob’s ladder in a lightly shaded border, rock garden, woodland, or cottage garden.

CareGrow in moist, but well-drained, soil in sun to partial shade. Some cultivars can grow in full shade.

PropagationSow seed in a cold frame in spring or fall. Divide in spring.

ProblemsPowdery mildew.

  • Genus : Polemonium
  • Plant Height : 1 to 3 feet
  • Plant Width : 1 to 3 feet
  • Zones : 4, 5, 6, 7, 8
  • Bloom Time : Early Summer, Summer
  • Uses : Ground Covers, Shade
  • Maintenance : Low
  • Moisture : Medium Moisture
  • Growth Rate : Moderate
  • Light : Partial Shade
  • Plant Type : Perennials
  • Characteristics : Self Seeds, Showy Foliage
  • Plant Seasonal Interest : Spring Interest
  • Flower Color : White

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