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

hydrangea 'Tivoli' · Hydrangea macrophylla 'Tivoli'
Best grown in moist but well-drained soil in part shade although tolerant of sun if soil remains moist; requires acid soil to produce the blue-purple colouring, in alkaline soils the flowers will become pink. See shrubby hydrangea cultivation for more detailed advice
Hydrangea feed in spring and again early summer