What flowers are suitable for Hangzhou
As a city renowned for its Jiangnan gardens, Hangzhou boasts得天独厚的 climate conditions that nurture a rich ecosystem of plants. The subtropical monsoon climate brings an average annual temperature of 17.8°C, combined with 70% humidity and ample rainfall, providing an ideal growing environment for various flowers. From classical gardens to modern balconies, choosing the right plants can make the courtyard fragrant throughout the four seasons.
Relationship between climatic characteristics and plant growth
The impact of temperature and humidity on flowers
The daily temperature difference in spring and autumn is about 8°C, which is suitable for the growth of warm temperate plants such as Saxifraga stolonifera and珠兰; the high temperature in summer, combined with 1765 hours of annual sunshine, allows tropical flowers like bougainvillea and fragrant vines to bloom; the low temperature period of 3°C or above in winter provides the necessary dormant period for cold-resistant varieties such as Camellia japonica and蜡梅.
Key points of precipitation and soil maintenance
The annual precipitation of 1454mm requires attention to drainage. When planting water-loving plants such as Campsis and blue snowflake, it is recommended to use ceramic particle layers. During the plum rain season, it is necessary to build shelters for succulent plants to prevent waterlogging and root rot.
Garden flower planting plan
Recommendation of perennial herbs
The shade tolerance of Ophiopogon japonicus makes it suitable for north-facing courtyards, the succulent leaves of Sedum sarmentosum can resist strong summer sunlight, and the花叶络石 can also thrive in stone crevices, creating a multi-layered ornamental leaf landscape with the combination of Heuchera.
Method of vine flower landscaping
In spring, Clematis can be combined with Osmanthus to create a flower corridor; in summer, Campsis and fireworks flowers can cover the pergola; in autumn,金银花 and络石 can form a fragrant barrier; in winter, keeping the evergreen ivy can maintain greenery.
Shade-tolerant plant combinations
Saxifraga stolonifera + Hosta + ferns form the "three swordsmen under the forest," combined with colorful leaf varieties of Heuchera, they can create a six-month-long ornamental period in the shade behind buildings.
Analysis of the city's symbolic plants
Key points for growing osmanthus
As a city flower cultivated for thousands of years, golden osmanthus is suitable for planting on gentle slopes facing southeast. Applying bone meal before and after the blooming period can enhance the fragrance concentration. Pay attention to preventing and controlling red spiders to keep the leaves glossy.
Techniques for maintaining camphor trees
The seedlings of camphor trees need to be protected from the cold, and for mature trees, it is important to prune the lower branches to maintain ventilation. Their volatile substances can repel insects, making them suitable as the main trees in the courtyard.
Choosing suitable plants can not only reduce the difficulty of maintenance but also reflect the characteristics of Hangzhou. From the city flowers and trees to new and excellent varieties, reasonable combinations can create a plant landscape with the cycle of the four seasons. It is recommended to choose shade-tolerant or sun-loving varieties based on the orientation of the building, and use the insect-repelling properties of camphor trees to build an ecological courtyard system.