How to Fertilize hydrangea [Endless Summer]?
Flowering shrub feed every three weeks spring through mid-summer heat
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hydrangea [Endless Summer] · Hydrangea macrophylla Endless Summer ('Bailmer')
Grow in moist but well-drained, humus rich soil, in a lightly shaded spot with shelter from cold, drying winds. Mulch annually in spring. Soil additives may be required to maintain specific flower colours. See shrubby hydrangea cultivation for more detailed advice
Flowering shrub feed every three weeks spring through mid-summer heat