Generally speaking, when the ambient temperature reaches below 0℃, a thin layer of ice will appear in the flowerpot, and the leaves will be frozen hard because the water in the leaves may be close to freezing point. Many people will go into a misunderstanding when dealing with frozen flowers and put them directly in a warm place. This practice is very bad. If the flowers are thawed under high temperature or direct sunlight, the sharp temperature difference will accelerate the death of the flowers.

The temperature can be raised to 2~3℃ first, and then stabilized at 5℃ after about 12 hours, and then gradually increased to 8~ 10℃ the next day. However, direct sunlight should still be avoided, and watering is not allowed. Only after 4-5 days can a small amount of sunshine be obtained. With the increase of temperature, the injured leaves will gradually return to normal, and the frostbitten tender leaves and buds will be light brown in color, but it will not affect the growth. After returning to normal, according to the degree of freezing damage, carry out reasonable pruning and shaping. Severely frozen branches and leaves should be cut off and cleaned in time, and withered leaves should also be removed. The flowers and trees with broken branches should be trimmed and reshaped in time, and the cut should be smooth. After cutting, some sulfur mixture or carbendazim powder can be applied to prevent wound infection.

Frostbite plants, it doesn't matter if only the branches and leaves are frozen by frostbite. If the root has been frozen, it can only be saved by luck. ...

Such as the aerial parts of flowers such as chlorophytum, Solanum nigrum, hawaii coconut, bamboo shavings, begonia, Zhu Dinghong, ivy, dripping Guanyin, Commelina communis, etc. All are dead, the roots are still intact, the dead parts can be cut off, and new buds can sprout after the spring is warm.

For columnar cultivated flowers such as radish, cauliflower, ruby, emerald and taro, if the branches and vines are frostbitten, the frostbitten parts can be cut off for the cuttings to germinate, and the cut branches can also be used for cutting.

The cutting part is used for cutting.

Woody flowers such as rubber tree, Liriodendron, Jasmine, Milan, Fortune Tree, Fujian Tea, Happiness Tree, Bougainvillea, Banyan Tree, etc. Should be cut off immediately until healthy plants are exposed; If the branches are severely frozen and all the leaves fall off, the obvious dead parts can be cut off first, and then the sprouting parts can be cut off according to the sprouting parts after the new buds germinate.

If you just freeze the leaves of flowers such as Dracaena, pig's feet, Cymbidium, Brazilian wood and lotus iron, you can cut off the frozen parts and wait for new buds and leaves to grow again. If the freezing injury occurs in the stem segment near the root, the frostbitten part can be removed in early spring, and the unfrozen part can be dried and buried in the soil again to take root. If the stem has been frozen, it can only be cut off and replanted.