How to Fertilize hydrangea 'Ningbo'?
Hydrangea feed in spring and again early summer

hydrangea 'Ningbo' · Hydrangea macrophylla 'Ningbo'
Grow in moist but well-drained, humus rich soil, in a lightly shaded spot with shelter from cold, drying winds. Mulch annually in spring. Pink flower colours are best maintained by growing in slightly alkaline soil, though plants may become chlorotic in strongly alkaline soils. See shrubby hydrangea cultivation for more detailed advice
Hydrangea feed in spring and again early summer