What Is the Ideal Temperature Range for hydrangea 'Cardinal Red'?
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hydrangea 'Cardinal Red' · Hydrangea macrophylla 'Cardinal Red'
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
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