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After entering the winter, although cold air frequently flies south, it has little effect on Ganzhou. However, in late December, a cold weather occurred more than one week after another. The temperature dropped from the previous 14 to 15°C to -5 to -6°C. The water drips into ice, and a heavy snowfall has occurred. The flower beds are cold and freezing. However, the observation of the leaves of Aloe vera showed only signs of water-soaking in the leaves of the old leaves near the ground and the tip of the new leaves, which was a mild freeze injury that did not prevent life. I feel relieved. In an instant to mid-January 2005, the weather forecast said that there will be a strong cold air that will affect the eastern part of the Yangtze River. In addition to cooling down, it will fall to Blizzard. Sure enough, on the night of the 12th, the sky was filled with goose feathers and snow. The next morning the snow stopped clear and the depth of snow in the flower bed below the ground was 8 cm. Fortunately, the aloe leaf on the snow surface was still standing, green and green, and I couldn't help myself again. I took this question. Figure photos.
Accidents will happen. In mid-February, the weather became warmer. It was already spring in the south of the Yangtze River. However, there was still cold air southwards and it was cold and warm. On February 27, Zhangzhou suffered a heavy snowstorm. Although it melted quickly, this time, poor aloes could not survive.
They say that the southern flower is "easy to winter and difficult to support in the spring." This time, I have understood the words of the ancestors.
It seems that plants naturally have an instinct to adapt to the situation, self-regulate, and fight against the harsh environment of nature. I think that the extreme low temperatures tolerated by Aloe vera should be below the above test temperature. From the cold resistance mechanism, after the plant cools below the freezing point, the body tissues freeze inside, and the first thing is the pure water film outside the cell wall. As the temperature drops, the ice crystals further expand. On the one hand, the cells lose water and cause cells to Concentration of protoplasm, colloidal material precipitation; on the other hand caused by increased pressure, cell membrane degeneration and cell wall rupture, severe plant death. After freezing damage to plants, the sharp rise in temperature is heavier than the slow recovery. As the temperature rises slowly, the interstitial ice crystals slowly melt and the plants can suck the water in the interstitial space back into the cell's interior, avoiding dehydration of the protoplasm. If the melting is too fast, especially under direct sunlight, the moisture in the intercellular space will quickly evaporate, which will aggravate the drying of the protoplasm and increase the damage of the plants. This is why my aloe vera did not survive the cold spell at the end of February.
Can the reed bloom winter?
I have cultivated the Aloe vera for many years. Every winter, according to the book, I say that “... not cold, the winter room temperature must not be lower than 5°C†guides wintering. Over the years, aloe vera was full of children and grandchildren, crowded in narrow flower pots. Last resort, in the spring of 2004, they were planted and transplanted in flower beds on the north side of the building. At that time, they did not consider so much. They thought that they could give them a living environment and they would be able to live. In the summer and fall of the past, whoever wants it, the wind, the rain, the sun, the drought, the high temperature, and the severe cold, all the harsh tests of nature have not only destroyed their spoiled life, but have made them all alive and have not had any disease. Even the most common focal point did not happen, much more potent than potted plants.
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