About
A herbaceous perennial with foliage that is purple-tinged in spring and autumn. These are cupped in shape and are held in clusters from late spring to midsummer. It bears clusters of sky blue flowers, marked in a darker blue with a small white centre.
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, West-facing, East-facing
ExposureExposed, Sheltered
UK hardinessH7
Plant details
Plant typeHerbaceous Perennial
HabitColumnar upright
FoliageDeciduous
Height0.5-1 metres
Spread0.1-0.5 metres
Time to full height2-5 years
Suggested usesCottage and informal garden
Care notes
CultivationGrow in any fertile, moist but well-drained soil preferably in full sun or partial shade
PruningDeadhead flowered stems so as to prevent self-seeding
PropagationPropagate by division in spring
Pest resistanceGenerally pest-free
Disease resistanceGenerally disease-free, but may be susceptible to powdery mildews