Current order processing time is approx 5-6 business days. INTERNATIONAL BUYERS Economy Mail is no longer availble due to Covid19. Standard and Express mail is still available to most countries but this can change daily.  

POLEMONIUM Jacobs Ladder

Polemonium caeruleum

Stock: Available


Family: Polemoniaceae

Characteristics: Perennial 45-60 cm

Seeds per packet: Approx 50

Hardy perennial that ranges in height from 45-60 cm; best known for its fern like colourful foliage and attractive upright flower spikes. The leaflets give a "ladder" effect on each side of the stem, bell-shaped flowers in shades of purple and lavender. Remove spent blooms to prolong blooming period.

Prefers a rich moist well-drained soil in a protected sunny position, frost resistant drought tender.

TropicalEarly Autumn & Winter. 
Temperate: Spring or Autumn.
Cool climate: Spring to Early Summer or Autumn.

Sow: On surface and firm gently. Do not sow deeply.
Polemonium seed should be sown in containers on the surface of the soil and pressed down gently, do not cover and the seed requires light and temperatures of 14-18°C (65-75°F) to germinate. Keep moist, transplant seedlings when the spring soil has warmed and they are large enough to handle. 

Plant space: 30cm
Germination: 14-28 days

Stay in touch

The latest product arrivals, inspiring garden ideas and sale alerts!