What flowers are suitable for growing in Datong
Datong, located at the junction of Shanxi, Hebei and Mongolia, breeds a unique plant landscape with its unique climate of cold winter and cool summer. Understanding the local climate characteristics with an average annual temperature difference of 30 ° C is of great guiding significance for creating courtyard landscapes and indoor greening. The main varieties of cold-resistant ground plants are selected for courtyards. After years of practice and screening, more than 20 species of local suitable plants have formed the main force of urban greening: the winter jasmine has become the pioneer in early spring with its cold resistance of-25℃; the cluster characteristics of lilac flowers are suitable for building flower hedges; the crown expansion of sophora japonica trees reaches 15 meters, making it an excellent road tree species. When brocade climbs the exterior wall of a building, each plant can cover an area of up to 8 square meters. It is recommended to adopt the "flowers in three seasons" configuration: in April, forsythia and camellia form a yellow pink contrast, in June, hibiscus and crape myrtle continue the flowering period, and in September, chrysanthemums are paired with ginkgo yellow leaves. Attention should be paid to PH value adjustment for peony planting, and legus soil should be added to calcareous soil for improvement. Analysis of urban symbol plants: City flower Clove Conservation As a city flower, the planting area of clove exceeds 300 hectares in Datong, with purple-and-white varieties accounting for 65%. Pruning residual flowers in time after spring flowering and retaining 3-5 pairs of bud points can promote flowering in the next year. Special attention should be paid to the prevention and control of soot disease. Regular spraying of Bordeaux mixture can effectively prevent it. The city tree national locust tree uses 127 ancient locust trees existing for more than a century, which are concentrated around the ancient city wall. It is recommended to use grafted seedlings with DBH of 8-10cm for newly planted Sophora japonica trees, dig 1.2-meter-square tree holes during planting, and mix them with peat soil to improve the survival rate. It is necessary to reach a height of 1.2 meters for white and anti-freezing every year in late autumn. Key points for indoor potted management are recommended for the long winter. Shade-tolerant and leaf-viewing plant combinations: hanging turtle bamboo and green radish to form vertical greening, and cooperating with a humidifier to maintain humidity of more than 40%. Bougainvillea needs to be placed on the south sill to ensure direct light for 4 hours a day. It is recommended to use ceramsite as a base with peat soil to not only retain water but also prevent root rot.
Through scientific selection of cold-resistant varieties and reasonable matching, a plant landscape with scenery in all seasons can also be created under the special climate conditions of Datong. Mastering the characteristics of the city's flower market trees can better reflect the regional cultural characteristics and make the green space have both ecological and humanistic values.