Hydrangeas are robust and vigorous deciduous shrubs, which find a place in the shady places of our garden. It is an acidophilic plant, which therefore needs a specific soil to develop at its best; this soil, together with the use of rainwater for watering, prevents the onset of iron chlorosis, a disease that manifests itself with the rapid yellowing of the foliage. Plants affected by iron chlorosis must be treated using special greening fertilizers, which enrich the soil with minerals, such as iron, which are easily assimilated by the plant. Hydrangeas, from April until autumn, need good watering, and fresh soil: during the summer months we will also have to intervene daily. The rapid collapse of the foliage in case of drought warns us when the plant needs water. In the case of specimens grown in pots, the positioning of a saucer allows us, during the warm months, to water our hydrangeas even every 2-3 days, letting the plants absorb the water they need from the saucer. During the winter, hydrangeas dry their leaves and generally do not require special care.