Native plants are most adapted to the local climate and soil, so they grow more vigorously. Therefore, since the establishment of the national ecological garden city in 2005, Suzhou has not only actively introduced exotic tree species, but also attached great importance to the cultivation of local plants. There are many native plants in Suzhou. Suzhou is located in the transitional zone between the north subtropical zone and the middle subtropical zone, with obvious characteristics of bioclimatic transition. Affected by the southeast monsoon, it is warm and humid, and the natural vegetation belongs to the deciduous, evergreen and broad-leaved mixed forest belt in the north subtropical zone. Among them, deciduous broad-leaved trees include Quercus acutissima, Quercus variabilis, Liquidambar formosana, Dalbergia odorifera, Sophora japonica, Pistacia chinensis, lacquer tree and so on. Evergreen broad-leaved trees include oak, Castanopsis sclerophylla, Holly, Myrica rubra, Heather and Cinnamomum camphora. The shrubs are beech, Vaccinium bracteatum, Sichuan alum, Gardenia and so on. In some areas, such as Shangguanshanling Nature Reserve in Guangfu Kiln, Schima superba and Toona sinensis are distributed. Dome Hill has Zinan and Tilia Nanjing. In limestone hills and mountains, there are Ulmus pumila, Pu Shu, Pteroceltis tatarinowii, Zelkova schneideriana and other Ulmaceae tree species, as well as Luan tree, Castanopsis sclerophylla, Hovenia dulcis, Syzygium persicum and oak trees. Bamboo plants are mostly concentrated in the hills and mountains in the south, including Phyllostachys pubescens, Phyllostachys pubescens, Cinnamomum cassia, pink green bamboo, short spike bamboo, Phyllostachys pubescens, Indocalamus and so on. Although the tree species in Suzhou city are different due to geographical location, microclimate, soil conditions, human activities and other factors, they are still mainly native trees, mainly deciduous broad-leaved trees, and there are few evergreen broad-leaved trees and conifers. Common ones are Quercus acutissima, Zelkova schneideriana, Pu Shu, Elm, Platanus acerifolia, Loquat, Heather and Cinnamomum camphora. The introduction of native plants into Suzhou urban greening and the selection of native plants suitable for local climate and soil conditions can shape the characteristics of urban landscape, and then show the style and characteristics of the city and, in the long run, the regional culture. In the process of establishing a national ecological garden city, landscaping departments and governments at all levels in Suzhou attach great importance to the application of native plants in greening. For example, the flower in Suzhou is Osmanthus fragrans, which has a long history of Osmanthus fragrans cultivation and the germplasm resources of Guangfu and Library. Osmanthus fragrans is the most common evergreen tree species in urban greening in Suzhou, and "Golden Autumn and October fragrance all over the city" has become a characteristic brand of Suzhou tourism. Suzhou has osmanthus park with osmanthus as the theme tree species, and dozens of varieties of osmanthus are planted. At the same time, native plant species are closely combined with Suzhou traditional garden art and culture, which has become the core content of garden culture. The garden construction in Suzhou attaches great importance to the protection of traditional gardens and the excavation of their cultural connotations. The Lotus Festival and the Rhododendron Festival held every year in Humble Administrator's Garden fully display the native plant resources and play a finishing touch role in creating the artistic conception of classical gardens. In addition, a large number of native plants are used in Suzhou urban greening construction, which improves the species richness of garden plant communities. Urban plant communities should also pursue natural beauty, optimize the combination of species, community appearance, shape and color, pay attention to the landscape, aesthetic feeling, implication and rhythmic effect of plants, produce aesthetic value and cultural heritage with natural charm, and achieve a highly harmonious effect of ecology, science and aesthetics. For example, in the scenic belt around Suzhou ancient city, with the theme of native plants, plant communities with different ornamental characteristics in four seasons are constructed to form a landscape with rich levels and prominent themes. Landscaping departments also use native plants to improve the natural environment and provide habitat for other creatures, thus creating conditions for building a stable ecosystem. For example, in Sanjiaozui Wetland Park, a large number of local aquatic plants, such as reeds, cattails and wild water bamboo, have been planted, providing habitats for many waterfowl and migratory birds. It has been observed that water birds such as night herons and swans spend the winter here. (Jia Ru) > >>& gt Welcome to the column "Suzhou Question" in the famous city community to participate in the discussion (Editor: Chen Yaping)