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The natural habitat of most hydrangea species is a slightly shaded spot at the edge of the forest or in clearings. The treetops protect the flowering shrubs during the midday hours from intense sunlight. The humus-rich soil provides even in prolonged periods of drought enough water and at the same time ensures that the humidity in the environment of hydrangeas is high.
Important: A sheltered location
Those who want to enjoy rich flowering, healthy hydrangeas in their garden, should offer the bushes similar living conditions. The most demanding are the popular peasant hydrangeas and also the plate hydrangeas, because both species are also relatively sensitive to frost. Open windy locations therefore do not please them at all. If there is no suitable wind protection in the form of larger, dense trees, hedges or walls on the eastern side, the shrubs often freeze strongly in cold winters. On the other hand, panicle hydrangeas and snowball hydrangeas such as the variety 'Annabelle' are less sensitive. In addition, they are blooming on the new wood, so are cut back in the spring anyway anyway.
Large trees as living parasols
If you have found a sheltered location for your new hydrangeas in the garden, you should also look closely at the lighting situation: very unfavorable, for example, are dry-hot locations in front of a south wall - here, the leaves of the hydrangeas quickly flabby in direct sunlight. Better: a wall facing west. The bushes get here only in the afternoon direct sun, but that's enough for peasant hydrangeas for a lush flowering. Even better, however, is a place under larger trees with umbrella-like crown and tolerant root system. Forest pines (Pinus sylvestris), for example, which are considered the perfect shade for rhododendrons, are also suitable as living parasols for hydrangeas. Other woody plants, which are also well suited to the hydrangeas, are, for example, flower dogwood (Cornus kousa and Cornus florida) and larger species of fan maple (Acer palmatum).
Trees and shrubs in the immediate vicinity provide enough shade
Enrich soil with humus
You do not have a suitable shade dispenser for your hydrangeas? Just plant one! Put a suitable tree or shrub together with a group of several hydrangeas. However, it will take a few years before he can fully fulfill his function. In any case, it is important that you enrich the soil with plenty of humus to improve its water holding power. You should also mulch it with bark humus, because it reduces evaporation and keeps valuable moisture in the soil. Thus, the hydrangeas - whose botanical name Hydrangea not for nothing means "water drinker" - are well prepared to temporarily cope with stronger sunlight.
Nevertheless, it is said: watering, pouring and watering again, when in the summer the rain fails over several days - and best with lime-poor tap water or rain water, because hydrangeas are naturally sensitive to lime.