About
A compact deciduous shrub to 1m high, with ovate, serrated dark green leaves that turn red in autumn. Flower colour varies depending on the pH of the soil; this cultivar produces deep blue flowers on acid soil, but flowers are tinted purple or pink on neutral to alkaline soil. In summer, broad flat lace-cap flower heads open to clusters of tiny, pale blue fertile flowers surrounded by large, eye-catching florets with scalloped edges.
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
SunlightPartial shade
Soil typeClay, Loam
Soil pHAcid, Neutral, Alkaline
Soil moistureMoist but well-drained
AspectEast-facing, North-facing, West-facing
ExposureSheltered
UK hardinessH5
Plant details
Plant typeShrubs
HabitBushy
FoliageDeciduous
Height0.5-1 metres
Spread0.5-1 metres
Time to full height2-5 years
Suggested usesCity and courtyard gardens, Coastal, Cottage and informal garden
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 any moist but well-drained soil in partial shade or grow in sun if soil remains reliably moist. Improve chalky soils with organic matter to support good growth. See shrubby hydrangea cultivation for further advice
PruningSee pruning group 4 for further advice and video guide
PropagationPropagate by softwood cuttings in early summer, or by hardwood cuttings in winter
Pest resistanceMay be susceptible to aphids, capsid bug, red spider mite, stem and bulb eelworm, vine weevil and scale insects
Disease resistanceMay be susceptible to a leaf spot, powdery mildews, grey moulds (Botrytis) and honey fungus (rarely)