Hydrangeas will wilt when they are under a lot of stress, whether it be from a lack of water, an excess of sunshine, extreme heat or cold, or after they have reached the end of their blooming cycle. It is possible to avoid the hydrangea from suffering irreversible harm if the source of the wilt is identified and actions are taken to remedy it.
Hydrangeas like damp soil. Because of their huge flower clusters and leaves, these plants demand a significant quantity of water on a regular basis. Root rot may occur when the roots are allowed to remain in wet soil for an extended period of time. It is important to ensure that the plant has enough drainage so that it does not get an excessive amount of water.
If a hydrangea does not get enough light, the plant will wilt and its leaves will become pale and sickly. A reduction in the amount of available sunshine may also have this effect. An excess of sunshine may cause sunburn, and it also has the effect of hastening the drying out of the leaves. The ideal setting for hydrangeas consists of six hours each day of full exposure to bright, indirect sunshine.
When exposed to high heat, the foliage of the hydrangea starts to wilt, and the blooms begin to shed their petals. The optimal daytime temperature range is between 65 and 75 degrees Fahrenheit, while the nighttime temperature range should not drop below 50 degrees Fahrenheit.
The drooping and drying out of hydrangea blossoms is an indication that their blooming time has come to an end. By removing spent flowers, you may make the plant seem better and extend the amount of time it retains its aesthetic appeal for a few more weeks.