About
With large, rounded mophead flowerheads in summer, colour depending on soil pH � blue in acidic soil, pink in alkaline. A compact, evergreen shrub reaching 1-2m, with toothed, mid-green foliage. The cultivar 'n' is valued by gardeners.
About the genus
Hydrangea can be deciduous or evergreen shrubs, or self-clinging climbers, with flowers in clusters usually comprising both small fertile and more showy sterile flowers; often good autumn colour
Growing conditions
SunlightFull sun, Partial shade
Soil typeClay, Loam, Sand
Soil pHAcid, Alkaline, Neutral
Soil moistureMoist but well-drained
AspectEast-facing, South-facing, West-facing
ExposureExposed, Sheltered
UK hardinessH5
Plant details
Plant typeShrubs
HabitBushy
FoliageDeciduous
Height0.5-1 metres
Spread0.5-1 metres
Time to full height5-10 years
Suggested usesCity and courtyard gardens, Cottage and informal garden, Patio and container plants
ToxicitySkin allergen. Wear gloves and other protective equipment when handling. Pets (dogs, cats): Harmful if eaten. For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Care notes
CultivationGrow in moist but well-drained, fertile soil in partial shade to full sun. Mulch annually with well-rotted organic matter. See hydrangea cultivation
PruningPruning depends on type. Remove spent flower heads in spring. See hydrangea pruning
PropagationPropagate by softwood cuttings in spring or semi-ripe cuttings in summer
Pest resistanceMay be susceptible to vine weevil, aphids and capsid bugs
Disease resistanceMay be susceptible to powdery mildew and honey fungus