What's with the fallen leaves of azaleas?

In fact, there are many reasons why rhododendron leaves fall off, but the topic rhododendron has been falling off in summer, which may be caused by the hot weather. Therefore, we must choose a good place to breed azaleas in summer, otherwise the leaves will not look good. It is suggested to move to a place with less light and ventilation in time to slowly alleviate the phenomenon of leaf shedding.

Rhododendron, also known as Rhododendron and Shan Shiliu, is an evergreen or ordinary green shrub. According to legend, there was a cuckoo in ancient times, which crowed day and night, hemoptysis, and dyed flowers all over the mountain, hence the name. Rhododendrons usually bloom in spring, with 2-6 flowers in each cluster. Corolla is funnel-shaped, with red, pink, apricot, snow blue, white and so on. , gorgeous colors. Born under sparse thickets or pine forests in mountainous areas at an altitude of 500-1200 (-2,500) meters, it is a typical indicator plant of acidic soil in south-central and southwest China.

This whole plant is used as medicine: it can promote qi and blood circulation, tonify deficiency, treat cough due to internal injury, deafness due to kidney deficiency, irregular menstruation and rheumatism. Because the corolla is bright red, it is a famous flower plant with high ornamental value and is cultivated in parks all over the world. There are as many as seven or eight cities in Jiangxi, Anhui, Guizhou and other places in China. Rhododendron is a provincial flower and has been designated as the city flower. 1985 In May, Rhododendron was rated as six of the top ten flowers in China.

Rhododendron was first recorded in Shennong Herbal Classic in Han Dynasty, in which Euonymus japonicus was listed as a poisonous plant. Rhododendron has been cultivated for at least 1000 years. In the Tang dynasty, ornamental azaleas appeared, and at this time azaleas had been transplanted into gardens for cultivation. Bai Juyi (772-846), a famous poet in the Tang Dynasty, had a soft spot for azaleas.

Bai Juyi not only wrote many poems praising azaleas, but also transplanted them himself. The first transplant did not survive, he wrote, "The struggle for Nai is deeply rooted and can be transferred to people, not for no reason"; In 820, it was finally transplanted. The poem says: "Today's flowers in Zhongzhou, the trees at the top of Lushan Mountain last year, have pity on the roots and cut new branches. Fortunately, bloom is still counted."

According to records, rhododendrons were collected and cultivated in the first year of Tang Zhenguan (785), and the most famous one was the rhododendrons cultivated in Helin Temple in Zhenjiang. ?

In the Song Dynasty, the cultivation of rhododendron had a new development. The poet Wang once transplanted azaleas in the courtyard: "The garden is small for personal use, and this flower is better than a golden belt." An Zhi in the Spring Forest in the Southern Song Dynasty: "Du Fu, this flower is very prosperous in the Qiantangmen Bodaiji. Su Dongpo has a poem by Du Fu in Nanyitang, which is kept in this hall. There are many flowers in the mountains. " It shows that azaleas are more common in quadrangles in Hangzhou.