How to Fertilize hardy white-flowered hydrangea?
Hydrangea shrub feed every four weeks spring through early summer

hardy white-flowered hydrangea · Hydrangea paniculata 'Grandiflora'
Also known as: large-flowered paniculate hydrangea
Grow in moist but well-drained soil in sun or partial shade
Hydrangea shrub feed every four weeks spring through early summer