Are crabapple flowers afraid of cold?
As one of the famous traditional flowers in China, crabapple flowers are deeply loved for their elegant attitude. Every winter, what gardeners care most about is its cold resistance and maintenance points. This paper will systematically sort out the overwintering performance of crabapple in different climatic regions and explain in detail key conservation factors. Deep interpretation of the cold resistance characteristics of crabapple. Experimental data on the temperature tolerance critical point show that adult crabapple can withstand low temperatures of-15℃ to-20℃, but persistent below-25℃ will lead to frostbite on branches and branches. The seedlings have weak cold resistance, so it is recommended to take protective measures before-10℃. There are differences among different varieties: Haitang Tiengan has better cold tolerance than Xifu Begonia, while Haitang Duisi prefers warm environments. Regional adaptability is manifested in the northern region (north of the Yellow River Basin), where ground-grown crabapple can generally winter naturally. The Yangtze River Basin needs to pay attention to preventing cold waves in winter, while the Lingnan area needs to prevent premature germination caused by high temperatures in winter. Winter management, three elements of gold temperature gradient management, the ideal wintering temperature should be maintained between 5-10℃. Plants in the northern courtyard can be raised with soil to protect their roots, and a 30-cm-high mound can be piled at the root neck. It is recommended to move potted plants to an unheated room to avoid freezing damage caused by excessive temperature differences. Light control strategy In winter, direct light needs to be guaranteed for more than 4 hours every day, and full sunshine maintenance can be carried out in North China. Indoor placement requires rotating flowerpots every week, combined with opening windows for ventilation 2-3 times a week, for more than 30 minutes each time to maintain air circulation. The "see dry, see wet" method is used for accurate water control, and the surface soil is drained after 3cm of dry. It is recommended to use warm water at around 20℃ and carry out at noon on a sunny day. Dry areas in the north can be combined with foliar spray to maintain air humidity of 40%-60%. The special climate response plan aims at the cold phenomenon of late spring. In mid-March, 0.2% potassium dihydrogen phosphate can be sprayed to enhance stress resistance. In snow-covered areas, snow on the canopy should be cleared in time to prevent branches from breaking. Drainage ditches need to be excavated in rainy areas in the south to avoid stagnant water and rot in the roots.
Through scientific management, crabapple can not only survive the winter safely, but also accumulate energy to prepare for spring bloom. Only by mastering its growth laws and formulating maintenance plans according to local conditions can we continue the prosperity of flowers year after year.