Jacobs ladder

Polemonium caeruleum

Jacobs ladder - Polemonium caeruleum

Common Name: Jacobs ladder
Genus: Polemonium
Species: caeruleum

Category: Perennials
Growth Rate: Average
Features: Has interesting foliage

Hardiness: HardyHeight: 0.30 m (30 cm)
Sun/Shade: Full sun or Partial shadeSpread: 0.30 m (30 cm)

Foliage Type: DeciduousFlower Colour: Blue, Purple
Foliage Colour: GreenFlowering Period: June

Soil Type: Normal/Loam
Soil Moisture: Moist, but well drained

Jacob's Ladder gets its name from the arrangement of its leaves pairs of opposite leaflets resembling a ladder. In early summer erect stems rise up from the bright green foliage carrying clusters of bell-shaped lavender-blue flowers. A cottage-garden favourite Jacob's Ladder is happiest in partial shade and looks equally at home in a wildlife garden setting or in grass. Although it is short-lived it self seeds freely.

  • Garden care: Cut the plant back after flowering to encourage a second flush of flowers. In autumn cut the faded flowerheads down to the ground and compost the dead stems.

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Jacobs ladder - Polemonium  'Lambrook Mauve'

Jacobs ladder
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Jacobs ladder - Polemonium reptans  'Stairway to Heaven'

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Polemonium reptans 'Stairway to Heaven'