Growth environment of Cymbidium grandiflora

The parent native species of Cymbidium are mostly distributed in the Indian Ocean monsoon region from the eastern part of the Himalayas and the southern part of the Hengduan Mountains to the Indo-China Peninsula. It is 1000-3000m above sea level. The most important feature of this area is the dry and wet season, that is, dry, cold but frost-free in winter, warm and humid but not hot in summer. Therefore, in the cultivation of Cymbidium, to prevent frost in winter, the general night temperature of 5-10 degrees is appropriate, lower than 5 degrees can be tolerated, but can not be frozen. If the night temperature is higher than 12 ℃, it will accelerate the vegetative growth and inhibit flowering. Because most of them bloom in the dry season, that is, from December to April of the following year, special attention should be paid to controlling the night temperature below 12 ℃ so as not to affect flowering. In summer, the temperature limit is generally 27 ℃, a few varieties is 30 degrees, above this limit, stop growing; cool at night, maintain the temperature difference between day and night, in order to facilitate growth. In natural habitats, the parent native species of Cymbidium are usually found in tall trees or tree rights, and a few are also found on rock walls, coexisting with epiphytic moss and ferns, while the roots are often more or less exposed to the air. The main characteristics of this habitat are ventilation, coolness, more scattered sunlight and rapid drainage. Due to frequent rain in summer, we can see moss and ferns that coexist with it. Humus is relatively humid, while it is quite dry in winter. Therefore, during cultivation, we should pay attention to spraying more water in summer to keep moist, and need more scattered sunlight; in winter, due to lower temperature and weaker sunlight, we need more light, but the amount of water required is significantly reduced. In the wild, it is often seen that the plants growing in sunny places are full of flowers and branches, but the leaves are not very beautiful, so it can be seen that the sun is conducive to flowering, but too strong will damage the leaves. Of course, the cultivation conditions of different varieties of Cymbidium are not uniform, and need to be determined according to the specific conditions. (Chen Xinqi, Ji Zhanhe)