About
A strong-growing but compact, upright herbaceous perennial to 50cm, with strongly toothed, lance-shaped leaves and dense spikes of dark purplish-pink, tubular flowers.
About the genus
Physostegia are erect rhizomatous herbaceous perennials with neatly arranged pairs of toothed leaves and terminal racemes of 2-lipped, tubular flowers in summer
Growing conditions
SunlightFull sun, Partial shade
Soil typeChalk, Clay, Loam, Sand
Soil pHAcid, Alkaline, Neutral
Soil moistureMoist but well-drained
AspectWest-facing, South-facing, East-facing
ExposureExposed, Sheltered
UK hardinessH7
Plant details
Plant typeHerbaceous Perennial
HabitColumnar upright
FoliageDeciduous
Height0.1-0.5 metres
Spread0.1-0.5 metres
Time to full height2-5 years
Suggested usesCottage and informal garden
Care notes
CultivationGrow in fertile, moist soil in full sun or partial shade
PruningCut back to the base in winter
PropagationPropagate by division in winter or early spring before new growth starts
Pest resistanceGenerally pest-free
Disease resistanceMay be susceptible to rots if rhizomes become damaged