About
Santiago' is a rounded, deciduous shrub to 1m tall and wide with dark green leaves that turn red in autumn and flattened pink flowerheads that deepen in colour to a reddish-pink with age.
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, Sand
Soil pHAcid, Alkaline, Neutral
Soil moistureMoist but well-drained
AspectNorth-facing, East-facing, West-facing
ExposureSheltered
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 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
PruningPruning group 4
PropagationPropagate by softwood or hardwood cuttings
Pest resistanceMay be susceptible to aphids, capsid bug, hydrangea scale and vine weevil
Disease resistanceMay be susceptible to a leaf spot, powdery mildews, grey moulds (Botrytis) and honey fungus (rarely)