How to Fertilize hydrangea 'Jōgasaki'?
Hydrangea shrub feed every four weeks spring through early summer

hydrangea 'Jōgasaki' · Hydrangea macrophylla 'Jōgasaki'
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 shrub feed every four weeks spring through early summer