When hydrangeas sense that warmer days are coming, they put out new growth. However, it happens that after a few warm days, frost appears again. Then, the plant should be properly secured so that it does not get damaged.
How to care for a hydrangea? The plant is quite demanding
Hydrangeas have high soil requirements – they should grow on humus, permeable and moist soil. They languish on clay and floodplain soils. They grow best in sunny and semi-shaded positions. Properly cared for, they bloom throughout the summer until late autumn. Keep it pruned to keep it blooming as much as possible. We do it regularly, every year, to get rid of dead shoots and we do it at the beginning of spring. Hydrangeas require a lot of watering, especially in summer, because too little water results in drying leaves and flowers.
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What to do if the hydrangea withered after the frost? There is a way to save the buds
When the temperature outside drops below freezing, the water inside the leaves freezes and the cells burst. During frosts, hydrangea can be seriously damaged, and the buds turn bright red, and even brown or black. They start to wilt over time. If you have noticed the effects of frost on your hydrangea, wait until the stem is mature to the point where it is producing bark, then scrape it below the frost damaged areas. This will ensure that the buds that are below the damage will continue to bloom.
Source: Gazeta

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