There are a wide variety of cold and heat-resistant green plants throughout the year, which can not only survive in extreme temperatures but also have high ornamental value. Here are some common cold and heat resistant green plants:
1. Rose: Rose is a widely planted flower in China, known as the "Queen of Flowers". It blooms naturally throughout the year and only stops after winter in the north. Rose can withstand temperatures as low as -15 ℃ and temperatures as high as 35-40 ℃, making it very suitable as a garden ornamental plant.
2. Honeysuckle: Honeysuckle is a perennial semi evergreen shrub with coiled and creeping stems, developed roots, lush branches and leaves, and fragrant flowers. It has strong cold resistance and can withstand temperatures as low as minus 30 ℃. At the same time, its heat resistance is also very strong, making it an ideal plant for courtyard planting.
3. Xuancao: Xuancao is a perennial plant of the lily family and the genus Xuancao. It has strong cold resistance and can withstand temperatures as low as minus 20 degrees Celsius. The scorching summer sun has little impact on it. Xuancao has bright colors, beautiful flower postures, well-developed root systems, and can prevent soil erosion by blocking silt. It is an excellent material for garden greening.
4. Iris: Iris is a perennial herb of the Iris genus, a common bulbous flowering plant with a wide variety of varieties. Iris flowers are super cold resistant, able to withstand temperatures as low as minus 10 degrees Celsius, and can also tolerate high temperatures in summer, so they are widely distributed. Iris leaves are emerald green, with large and unique flower shapes that resemble fluttering butterflies, and have high ornamental value.
5. Hibiscus: Hibiscus has strong adaptability to the environment, is resistant to dryness and barrenness, does not have strict requirements for soil, prefers warm and humid climates, is resistant to pruning, heat and cold. Cultivated in northern regions, it can overwinter in the open and is a good garden ornamental plant and honey source plant.
6. Alum root: Alum root is a perennial cold resistant herbaceous flower that can tolerate low temperatures of -30 ℃, and high temperatures of over 30 degrees Celsius in summer have no effect on it. The roots of alum are shallow, the leaves are heart-shaped, the colors are diverse, and the inflorescence is spike shaped, with high ornamental value.
7. Yuzan: Yuzan is a perennial perennial plant that prefers shade and humidity, is cold resistant, and not tolerant to strong sunlight. It has a flowering and fruiting period from August to October, with single or 2-3 flowers clustered together. It is white, fragrant, and has a high ornamental effect. It is commonly used for wetland and waterfront greening.
8. Lilac: Lilac is a deciduous shrub or small tree of the Syringa genus in the Oleaceae family, named after its slender and fragrant flower tube. Lilac has strong adaptability, robust habits, easy cultivation, and is resistant to heat, cold, drought, and barrenness, with fewer pests and diseases. Its inflorescence is large, the flowers are lush, the colors are elegant and fragrant, and it is a widely cultivated and used plant in gardens.
9. Pine and Cypress: As evergreen trees or shrubs, pine and Cypress have strong cold and heat resistance. They have beautiful tree shapes, lush green branches and leaves, and high ornamental value, making them very suitable as green plants for courtyards or gardens.
10. Other green plants include carnation, lavender, daisy, silver lotus, winter jasmine, red palm, and yellow chrysanthemum, which also have certain cold and heat resistance and can grow well under different climatic conditions.
These green plants are excellent representatives of cold and heat resistance, not only able to survive in various climatic conditions, but also have high ornamental value and greening functions. When choosing green plants, one can choose according to specific environments and personal preferences.