About
A rhizomatous perennial to 40cm tall forming clumps of upright stems bearing linear to lance-shaped leaves with toothed margins and small, white summer flowers.
About the genus
A genus of rhizomatous perennial, marginal pond plants with narrow green leaves and small, delicate white to pale pink flowers
Growing conditions
SunlightFull sun, Partial shade
Soil typeClay, Loam, Sand
Soil pHAlkaline, Neutral, Acid
Soil moisturePoorly-drained, Moist but well-drained
AspectEast-facing, South-facing, West-facing
ExposureExposed, Sheltered
UK hardinessH5
Plant details
Plant typeHerbaceous Perennial, Bogs
HabitClump forming
FoliageDeciduous
Height0.1-0.5 metres
Spread0.1-0.5 metres
Time to full height2-5 years
Suggested usesCottage and informal garden, Wildlife gardens
Care notes
CultivationGrow in moisture-retentive soil in full sun or partial shade; suited to boggy conditions and for pond margins
PruningCut back after leaves have died down in autumn
PropagationPropagate by seed or by division
Pest resistanceGenerally pest-free
Disease resistanceGenerally disease-free