Will Hydrangeas Freeze to Death in Winter?
For most people, the question of whether hydrangeas will freeze to death in winter and the knowledge about the winter care techniques for green plants and flowers are quite good tips, so it's recommended to save this for later reference!
Hydrangeas grown outdoors in the north will freeze to death in winter. But in the southern regions, they can all safely overwinter when grown outdoors.
Most hydrangea varieties can tolerate low temperatures of 5°C when grown outdoors, but the endless summer hydrangeas can even survive overwintering on the ground in areas with temperatures around -20°C in the north.
Overwintering in Winter
The suitable growth temperature for hydrangeas is around 20°C. To overwinter, it is necessary to keep the temperature no lower than 5°C, otherwise, it is easy for the hydrangeas to freeze and affect their ability to survive the winter. In the north, potted hydrangeas need to be moved into a greenhouse to overwinter during winter.
Overwintering Measures for Hydrangeas
1. Hydrangeas grown outdoors in the south do not need special attention in winter; they will naturally grow well.
2. For potted hydrangeas in the north, good insulation measures should be taken in winter. A thick plastic bag can be used to prevent freezing and keep the flower buds warm. During the day, the plastic bag should be removed for ventilation.
3. More comprehensive insulation measures should be taken for hydrangeas grown outdoors, such as covering them with straw, leaves, pine needles, etc., to prevent freezing. Alternatively, a blanket or plastic sheet can be placed over the hydrangea flowers to resist the cold.
4. Potted hydrangeas should be moved indoors for cultivation in winter and placed in a semi-shaded area. They should not be placed near radiators, as high temperatures are not conducive to bud differentiation and can easily lead to no flowering the following year.
Winter Care for Hydrangeas
1. Sufficient sunlight. Even in winter, it is necessary to ensure that hydrangeas receive ample sunlight to promote photosynthesis.
2. Reduce watering. With the low temperatures in winter, hydrangeas are in a dormant or semi-dormant state, grow slowly, and require less water, so watering should be reduced to keep the soil dry.
3. Stop fertilizing. Fertilize once before winter to enhance the plant's cold resistance. Since growth is slow in winter, fertilizing should be stopped.
The content mentioned above about whether hydrangeas will freeze to death in winter and the winter care techniques for hydrangeas is provided for your reference. Green plant enthusiasts may find it useful to draw on this information.