Metasequoia glyptostroboides is a deciduous tree with a relatively tall tree shape, and the height of mature trees can reach 35 meters. The branches are straight, the tree is straight, the tree is tall, and the ornamental value is high.
Is Metasequoia afraid of cold in winter?
Metasequoia is afraid of cold. Because Metasequoia glyptostroboides is a light-loving plant, the temperature suitable for Metasequoia glyptostroboides growth is generally between 13-25 degrees. It is not very cold-resistant, and it is generally afraid of freezing in winter. When maintaining indoors, keep it in a sunny place. If the sun is weak, it needs to be maintained on the windowsill.
Metasequoia glyptostroboides is cold-resistant
Metasequoia glyptostroboides is not particularly hardy. In winter, the lowest acceptable temperature is about 8 degrees below zero. If the temperature is lower than this, the leaves of Metasequoia glyptostroboides will fall off. It is best to control the temperature above -8 degrees, and the cold tolerance of Metasequoia glyptostroboides seedlings is even worse, so it is necessary to do a good job of cold protection.
Winter maintenance of Metasequoia glyptostroboides
1, freeze water in time.
The whole life process of Metasequoia glyptostroboides is inseparable from water. Although the evaporation in winter is small and the water demand is relatively small, it affects the cold resistance of garden Metasequoia glyptostroboides and its growth and development in the coming year.
Therefore, Metasequoia glyptostroboides, especially newly planted Metasequoia glyptostroboides, should be first irrigated at 1 1. That is, "irrigation with frozen water", combined with the frozen water after irrigation, a mound is cultivated at the base of Metasequoia glyptostroboides. This not only supplies the water needed by trees themselves, but also improves the cold resistance of Metasequoia glyptostroboides.
Step 2 apply fertilizer
After the treetops stopped growing in autumn, the root system showed another growth peak. Therefore, in late autumn and early winter, according to the age and planting time of the tree, some organic fertilizer or chemical fertilizer should be applied appropriately, supplemented by some shrubs, so that the fertilizer can penetrate, so as to promote the generation of new roots, enhance the tree vigor and lay a good foundation for the growth and development in the coming year.
3, plastic pruning
According to the different application purposes of Metasequoia glyptostroboides, correct pruning can not only adjust the tree shape, but also coordinate the relationship between the aboveground and underground parts, promote flowering and fruiting, and eliminate pests and diseases.
This work can be completed around the "winter solstice". If the quantity is large, it can be extended to around the Spring Festival. According to the growth characteristics of Metasequoia glyptostroboides, the dead branches, weak branches, pests and diseases should be cut off together, and the overgrown branches should be properly retracted to improve the ventilation and light transmission conditions inside the crown.
4. The trunk is painted white
Whitening the trunk in winter can not only reduce the harm caused by the large temperature difference between day and night, but also eliminate the pests and diseases that overwinter in the cracks of bark. The formula of whitening agent is calcium lime 10, salt 1 0, sulfur powder 1 0 and water 40. This work can be carried out in June 1 1.