About
This clump-forming perennial to 90cm tall, with ladder-like, pinnate mid-green leaves composed of leaflets edged creamy-yellow, fading to white in shade, and bearing sprays of blue flowers 2.5cm wide with prominent yellow stamens in early summer.
About the genus
Polemonium can be annuals or herbaceous perennials or upright or spreading habit, with pinnate leaves and usually clustered, tubular, bell, or funnel-shaped flowers
Growing conditions
SunlightFull sun, Partial shade
Soil typeChalk, Clay, Loam, Sand
Soil pHAcid, Alkaline, Neutral
Soil moistureMoist but well-drained
AspectSouth-facing, East-facing, West-facing
ExposureExposed, Sheltered
UK hardinessH7
Plant details
Plant typeHerbaceous Perennial
HabitClump forming
FoliageDeciduous
Height0.5-1 metres
Spread0.1-0.5 metres
Time to full height2-5 years
Suggested usesCity and courtyard gardens, Coastal, Cottage and informal garden, Patio and container plants, Wildlife gardens
Care notes
CultivationGrow in any fertile, moist but well-drained soil preferably in full sun or partial shade
PruningCut back to the base in autumn
PropagationPropagate by division in spring
Pest resistanceGenerally pest-free
Disease resistanceMay be susceptible to powdery mildews