What flowers are suitable for Yushu
In the abdominal area of the Qinghai-Tibet Plateau, Yushu Tibetan Autonomous Prefecture has a unique cold climate that not only brings magnificent scenery but also presents a severe test for plant growth. The average annual temperature here is only 2.9°C, with day-night temperature differences reaching over 20°C. The special geographical environment makes plant selection full of wisdom.
Climate characteristics of Yushu and plant adaptability
Analysis of the characteristics of cold climate
The typical highland continental climate forms a frost-free period of 200 days, with annual precipitation concentrated in June to September, and UV radiation intensity 30% higher than that of low altitude areas. This environment has nurtured a unique plant community, with the average annual temperature of the soil layer 10cm below the ground at around 5°C.
Advantages of light resources
The annual sunshine hours exceed 2600, with strong photosynthetically active radiation (PAR) reaching 50mol/m²/day, providing unique growing conditions for cold-resistant flowers. The sugar accumulation mechanism formed by day-night temperature differences creates the unique bright colors of plateau flowers.
Practical scheme for flower cultivation in Yushu
Preferred varieties for open-air courtyard
Gesang flowers and marigolds, among other native plateau flowers, have an anti-UV epidermal wax layer, and their root β-amylase activity is 40% higher than that of common varieties, allowing them to maintain vitality in freeze-thaw cycles. The lignification degree of hollyhock stems reaches 35%, enabling them to withstand gale-force wind up to level 9.
Indoor potted plant care skills
Using double-layer hollow pots combined with vermiculite substrates can keep the root zone temperature stable at 12-18°C. Leaf-viewing plants such as pothos need to maintain a 60% shading rate, and supplementing with molybdenum trace element nutrient solution weekly can prevent highland yellowing disease.
Discussion on the culture of Yushu's city flower and city tree
Although not yet officially established, Gesang flowers have been recognized by 80% of the citizens for their tenacious vitality. Salix xerophila, as a candidate for the city tree, has root soil-binding capacity three times that of common species, perfectly fitting the needs of plateau ecological protection.
In Yushu, at an altitude of 3680 meters, every blooming flower is a witness to the miracle of life. Through scientific selection of varieties and meticulous care, the dream of a plateau garden is becoming a reality. With the deepening of ecological research in the future, this land will undoubtedly show richer plant diversity.