A picture of a Jacob's Ladder

Jacob's Ladder

Polemonium foliosissimum

Also known as

Leafy Jacob's-Ladder, Leafy Polemonium, Towering Jacob's-Ladder

Full Sun
Moderate watering
Frost Hardy

H6

RHS hardiness

-20°C

Minimum temperature

Expected size

Height
Spread

90cm

Max

65cm

60cm

Min

50cm

Flowering

  • spring
  • summer
  • autumn
  • winter

Jacob's Ladder Overview

This species is a clump-forming perennial. The leaves are pinnate with 11-25 elliptic to lance-shaped leaflets. The flowers are borne in dense axillary and terminal cymes of bell-shaped blue-purple or cream flowers in the summer.

Common problems with Jacob's Ladder

How to propagate Jacob's Ladder

Cuttings

You can propagate the annuals from seed and the perennials from seeds or cuttings.

Seed

Other uses of Jacob's Ladder

Walls, rock garden, borders