What flowers are suitable for cultivation in Hainan?
In Hainan Tibetan Autonomous Prefecture, located on the northeast edge of the Qinghai-Tibet Plateau, the unique plateau climate has fostered a distinctive plant ecosystem. This land, with an average altitude of over 3000 meters, faces challenges and opportunities from the arid, rainless conditions combined with intense ultraviolet radiation.
Rules for Flower Cultivation in Plateau Climate
Deep Decoding of Climate Characteristics
The cold temperate climate, with an average annual temperature of 3.3°C, combined with a dry environment of annual precipitation of 250-450mm, creates a typical plateau feature of day-night temperature differences reaching 15°C. The intensity of ultraviolet radiation exceeds that of the plain areas by 40%, imposing special requirements on the plant cuticle.
Preferred List of Stress-Tolerant Plants
Field cultivation has verified that 21 species of flowers suitable for the plateau perform outstandingly:• Drought-resistant series: Coreopsis, Dahlia, and Lily of the Nile• Cold-resistant series: Chinese Lantern, Peony, and Rugosa Rose• High-light adaptation series: Zinnia, Sunflower, and Hollyhock• Perennial dominant species: Apricot, Lilac, and Mallow
Cultural Expectations for City Flowers and Trees
Potential Analysis of Candidate Species
Although not officially established, the most anticipated candidates are the Gazania (Cosmos) and Qinghai Spruce. The former has a flowering period of up to five months, while the latter's cold and drought resistance perfectly matches the local ecosystem.
Key Points of Cultivation Techniques
In the sandstorm season from March to May, it is recommended to build windbreak nets; during the rainy season from July to August, drainage layers should be set; in winter, the mulching method should be used to protect the roots, combined with organic fertilizers to enhance stress resistance.
In this highland, which is closest to the sky, every blooming flower is a miracle of life. From courtyard cultivation to municipal greening, choosing suitable flowers is not only about survival rates but also about wisely adapting to the plateau ecosystem. With the advancement of ecological city construction, the city flower and tree symbolizing the regional spirit will surely break through the soil.