About
Spiraea sargentiana is a vigorous, arching deciduous shrub producing narrow, toothed, dark green leaves and dense flat-topped clusters of white flowers in early summer. An ornamental Spiraea suited to a large border or informal planting.
About the genus
Spiraea are deciduous shrubs, sometimes suckering, with simple leaves and short racemes, panicles or corymbs of small, 5-petalled white or pink flowers in spring or summer
Growing conditions
SunlightFull sun, Partial shade
Soil typeChalk, Clay, Loam, Sand
Soil pHAcid, Alkaline, Neutral
Soil moistureMoist but well-drained, Well-drained
AspectEast-facing, South-facing, West-facing
ExposureExposed, Sheltered
UK hardinessH6
Plant details
Plant typeShrubs
HabitSpreading branched, Pendulous weeping
FoliageDeciduous
Height2.5-4 metres
Spread2.5-4 metres
Time to full height5-10 years
Suggested usesCottage and informal garden
Care notes
CultivationGrow in moist but well-drained soil in full sun or light shade, ideal for a large informal garden
PruningPruning group 6 for spiraea flowering on current years stems
PropagationPropagate by softwood or semi-ripe cuttings in spring to late summer or hardwood cuttings in winter
Pest resistanceGenerally pest-free
Disease resistanceGenerally disease-free but may be susceptible to honey fungus