1. Rhododendron (scientific name: RhododendronsimsiiPlanch.): It is an evergreen shrub and a deciduous shrub of the genus Rhododendron in the class Rhododendron and the family Rhododendron. Also known as azalea and mountain pomegranate. According to legend, there was a cuckoo bird in ancient times that whined day and night and coughed up blood, dyeing the flowers all over the mountain red, hence its name. Rhododendrons generally bloom in spring, with 2-6 flowers in each cluster. The corolla is funnel-shaped, with red, light red, apricot red, snow-green, white, etc., and the colors are luxuriant and gorgeous. It grows in mountainous shrubs or pine forests at an altitude of 500-1200 (-2500) meters. It is a typical acidic soil indicator plant in central and southwestern China.

2. Spring azalea refers to a variety that blooms first and then buds, blooming in mid-April, late April, and early May. The so-called spring azalea was first introduced to Shanghai by Mr. Shen Yuanru from Japan in the 1920s and 1930s. At the same time, local flower farmers have developed unique domestic varieties through the selection and hybridization of original species. Because of its blooming in spring, it was named Spring Cuckoo, and it has continued like this to this day. Spring azaleas are native to China and are also found in the Malay Peninsula and the high mountains of southern Asia. The mountainous areas of Sichuan, Yunnan, and Guizhou in China are extremely rich in evergreen rhododendron species, and deciduous rhododendrons are distributed from Northeast to South China. The natural communities are distributed in high mountains, growing on shady slopes, and are semi-shady plants. It likes to grow in cool climate, high air humidity, and acidic soil. It is also tolerant of barrenness, but not stagnant water.

3. Hydrangea: Hydrangea can be said to be very suitable for keeping outdoors, because it likes sunshine and water, and it doesn’t matter if it is exposed to rain or sun. You can usually see clusters of them in the park. Hydrangeas will bloom particularly well if no one takes care of them regularly, and the leaves will be very energetic.

4. Lingxiao flower: The flowering period of Lingxiao flower is in summer, which means that its growth is inseparable from sunlight. If there is not enough light, its branches will become very slender, so it is best to grow it. It's best to let it grow freely in your yard.