What flowers are suitable for cultivation in Tonghua
Situated in the depths of Changbai Mountain, Tonghua City boasts a unique temperate and humid climate, making it an ideal growth environment for a variety of flowering plants. With an average annual temperature of 5.5℃ and abundant precipitation, it tests the cold resistance of plants while nurturing a unique urban green landscape.
Optimal planting solutions for ground plants in Tonghua
Cold-resistant and frost-hardy flowers
In extreme low temperatures of -33℃, plants like Dianthus, wintersweet, and hibiscus demonstrate astonishing resistance. Among them, hibiscus not only tolerates cold but also has a flowering period of up to four months, becoming a mainstay in courtyard landscapes. New varieties such as the Norwegian maple and Siberian iris, introduced in recent years, have been successfully trial-planted by the municipal bureau of parks and gardens and promoted in multiple communities.
Water-saving and drought-resistant varieties
As the city flower representative, the iris has roots that can reach 1.5 meters deep to absorb water, with a single plant covering an area of up to 0.8 square meters, making it a main force in urban green belts. Varieties like the yellow rose and clematis reduce transpiration through their leaf wax layer, maintaining good growth even in dry seasons.
Key points for indoor potted plant care in Tonghua
Adapting to a warm environment
With indoor temperatures consistently between 18-25℃, foliage plants like the money tree and fortune tree need to be accompanied by a humidifier to maintain 60% humidity. Regularly wiping the leaves with beer can enhance photosynthetic efficiency, and rotating the pot 15 degrees every 10 days in winter can prevent crown bias.
Light control techniques
Considering the characteristic of 2200 hours of sunlight annually, plants like the蟹爪兰 (cattleya) and azalea need to set up shade nets to filter strong light. Experimental data shows that using a shade net with 30% light reduction can increase the growth rate of green vines by 40% and reduce leaf burn rate by 75%.
Interpretation of symbolic plants in the city
The city flower, iris
This iris plant shows super adaptability in Tonghua, with roots that can decompose heavy metal pollutants, and a single plant can sequester 3.6 kilograms of carbon per year. The iris sea of tens of thousands of plants in the municipal square attracts over 200,000 tourists every year.
The city tree, maple
The unique Changbai maple variety in Tonghua displays seven gradient colors in leaf color change, with a PM2.5 retention efficiency of 58%. The maple corridors on the main roads of the city have an air negative ion concentration of 3800 ions/cm³ in autumn, three times higher than that of ordinary streets.
Through the scientific selection of plant varieties, Tonghua residents can create evergreen courtyard landscapes while participating in urban ecological construction. The municipal planning "One Street, One Scene" project is turning Peony Street's peonies and Construction Road's lilacs into new city cards, allowing plants and the city to coexist and thrive together.