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

hydrangea 'Nachtigall' · Hydrangea macrophylla 'Nachtigall'
Grow in moist but well-drained, humus rich soil in part shade, will tolerate full sun if soil remains moist. Requires acid soil to produce blue colouring, in alkaline soils the flowers will become pink. Provide shelter from cold, drying winds. See shrubby hydrangea cultivation
Hydrangea shrub feed every four weeks spring through early summer