How cold can Hydrangeas tolerate?
Main content introduction: Knowledge about how cold Hydrangeas can tolerate in the aspect of green plants and flowers. Next, our site editor will introduce this to everyone.
How cold can Hydrangeas tolerate?
Hydrangeas can tolerate about 5 degrees Celsius, and their cold resistance is not strong. If the plants are exposed to temperatures below 5 degrees Celsius for a long time, they may get frostbite and even die. Therefore, after entering winter, it should be moved indoors for maintenance to ensure that the room temperature is above 10 degrees Celsius. For Hydrangeas planted in the ground, wrap the main stem with plastic film or straw mat after entering winter, and cover the roots with a layer of straw to keep warm.
Hydrangeas can tolerate about 5 degrees Celsius, and their cold resistance is not very strong. If the plants are exposed to temperatures below 5 degrees Celsius for a long time, they may develop frostbite, and in severe cases, the entire plant may die. Therefore, after entering winter, it should be moved indoors for maintenance to ensure that the room temperature is above 10 degrees Celsius.
If Hydrangeas are planted in the ground, it is necessary to cut off all the dry, diseased, and wild branches on the plant before entering winter to accumulate nutrients for overwintering. Then, apply a winter fertilizer, wrap the main stem with plastic film or straw mat after entering winter, and cover the roots with a layer of straw.
During the cultivation period, it is necessary to keep the potting soil moist for a long time, avoid waterlogging when watering, and pay attention to drainage during the rainy season to prevent root rot. Moreover, Hydrangeas are short-day plants and require over 10 hours of darkness each day. A shading of 60%-70% is ideal for normal conditions.
To keep Hydrangeas' vibrant colors, use loose, fertile, and well-draining sandy loam soil during cultivation. To deepen the blue color of the flowers, apply aluminum sulfate during the bud formation stage. If you want to keep the flowers pink, apply lime to the soil.
The above is the full content about how cold Hydrangeas can tolerate, hoping it helps plant enthusiasts!