About
Sonnenstrahl' is a tall, free-flowering, upright perennial with ovate leaves and large yellow flower heads on branched, leafy stems in early summer.
About the genus
Inula may be annuals, herbaceous perennials or sub-shrubs, moslty with large basal leaves and daisy-like yellow flower-heads, often with narrow ray-florets
Growing conditions
SunlightPartial shade
Soil typeChalk, Clay, Loam, Sand
Soil pHAcid, Alkaline, Neutral
Soil moistureMoist but well-drained
AspectNorth-facing, West-facing, East-facing
ExposureExposed, Sheltered
UK hardinessH6
Plant details
Plant typeHerbaceous Perennial
HabitBushy
FoliageDeciduous
Height1.5-2.5 metres
Spread0.5-1 metres
Time to full height2-5 years
Suggested usesWildlife gardens, Cottage and informal garden, Wildflower meadow
Care notes
CultivationGrow in a deep, fertile moist but well-drained soil in partial shade
PruningCut back after flowering
PropagationPropagate by seed in pots in a cold frame in spring or autumn. Propagate by division in spring or autumn
Pest resistanceGenerally pest-free
Disease resistanceMay be susceptible to powdery mildews