What Flowers are Suitable for Shenyang
Under the nourishment of the black soil in the Northeast, Shenyang's unique semi-humid climate creates a natural advantage for plant growth. The severe cold of -20°C in winter and the brief high temperatures of 30°C in summer form a special ecological selection mechanism, which gives local horticulture a distinct regional characteristic. Understanding the adaptation between climatic features and plant attributes is the key to creating a colorful courtyard.
Characteristics of Flower Planting Environment in Shenyang
Advantages of Temperate Climate Planting
With an average annual temperature of 7.6°C and 600 mm of precipitation, combined with a frost-free period of 274 days, a typical northern planting cycle of spring sowing and autumn harvest is formed. The characteristic of day and night temperature difference reaching 15°C not only favors sugar accumulation to make fruits sweeter but also creates the unique bright colors of succulent plants.
Key Elements of Winter Protection
Special attention should be paid to the extreme low temperatures from November to the following March for plants grown in the ground. It is recommended to use the double insulation method of covering the roots with soil and wrapping with straw. For trees, anti-freeze paint can be applied, and vines need to be牵引固定 to avoid frost damage.
Recommended List of Suitable Plants
Perennial Cold-Resistant Herbs
Dutch aster and Sedum spectabile, with their developed fleshy roots, can naturally overwinter in -25°C environments. Combined with the large leaves of Hosta plantaginea and the tall flower stems of Hemerocallis, they can form a disorderly but attractive ornamental effect.
Preferred courtyard Shrubs
Lilac and Ulmus pumila hedges have both isolation and ornamental value. The thorny nature of Rosa xanthina is suitable for boundary protection, and its golden yellow flowers combined with the bright red branches of Swida alba create a stunning winter landscape.
Tree Cultivation Recommendations
Oil pine, as the king of street trees, is recommended to have a planting spacing of 8-10 meters. The early spring blooming characteristic of Prunus triloba can make up for the空白 in the blooming period of trees, combined with the autumn red fruits of Sorbus, achieving a scenic view in three seasons.
Details of City Flower and Tree Cultivation
Rose Planting Techniques
As the city flower, roses in Shenyang are often propagated by cutting. In mid-April, semi-woody branches are selected, dipped in rooting powder with a slanted cut, and then inserted into sandy soil. It is important to maintain a soil pH of 6.5-7.0, and applying phosphorus and potassium fertilizers before the flowering period can increase the diameter of the flowers by 30%.
Oil Pine Maintenance Points
Young oil pine seedlings need to have windbreaks set up, and mature trees require pruning of dead branches and crown thinning every spring. For the common pine caterpillar pest, a biological control method using tree trunk painting with lime sulfur mixture and hanging traps can be adopted.
On this black soil of Shenyang, the choice of plants is essentially an agreement with nature. From cold-resistant herbs to native trees, the growth of each plant tells the ecological wisdom of survival of the fittest. When the city flower, roses, bloom, they not only decorate the city streets but also carry on the gardening ingenuity of the people of Shenyang for hundreds of years.