Plant phenology and its phenological phase characteristics are an important basis for landscape collocation and giving play to the beauty of landscape timing. As the capital of Inner Mongolia, Hohhot is in the ascendence of urban garden construction. It is of great practical significance to observe and study the phenological period of common garden plants in Hohhot. In this paper, 20 kinds of garden plants in Hohhot City were investigated, and phenological stages and phases of different garden plants were analyzed, and the phenological stages were clustered. The results showed that:（1）The observed phenological period lasted from early March to late November,and the flowering and fruit stages accounted for the largest proportion.（2） The phenological characteristics of flowering stage showed that the number of plants with white color was the most;The phenological characteristics of fruiting stage showed that the number of yellow-brown fruiting plants was the largest. The phenological characteristics of autumn leaf stage showed that the number of plants with yellow leaf color was the most.（3）The results of systematic cluster analysis showed that at the threshold of 4, 20 garden plants were divided into five types: early flower bud germination-early flowering, early leaf bud germination-early leaf development, early leaf development-early deciduous period, late flowering-late deciduous period, and late flowering-late fruit period. This study provides a scientific basis for the garden planning and design of Hohhot city and the selection and configuration of plant materials.

为在长沙地区进行南洋杉的引种栽培,探讨了不同处理方法对种子发芽率和不同盆栽基质对生长发育的影响,并测定了长沙地区安全越冬的临界温度.结果表明:南洋杉种子以浸泡后播于沙中发芽率最高,达26.4%;南洋杉生长发育最佳盆栽基质为3份营养土加1份沙;南洋杉在长沙地区安全越冬的临界温度为-3.5 ℃.