The latest azalea leaves yellow or fall off the reasons and solutions

Azalea, also known as Yingshanhong, mountain pomegranate, according to legend, there are cuckoos in ancient times, day and night wailing and hemoptysis, red flowers all over the mountain, hence the name, rhododendron flowers luxuriant and colorful, high ornamental value. But many people will have buds falling off, leaves yellowing, or even falling off into poles when they breed. What's going on at this time? Let's get to know it.

1. Improper fertilizer and water

Rhododendron has a delicate root system, afraid of drought, waterlogging, and big fertilizer. If it is not properly watered or not watered for a long time, it will cause the leaves to droop. In serious cases, the normal leaf tips will be scorched, and a large number of leaves and buds will fall off. If the soil is too wet for a long time or in time, the root system will suffocate and rot, resulting in the yellowing and shedding of the old leaves in the lower layer, and the leaves of the whole plant will fall off in serious cases. Excessive fertilization or application of immature raw fertilizer will also cause root burns or fertilizer damage, light leaves yellowing, a large number of fallen leaves, heavy plant death.

2. Alkalinity of soil and water

Rhododendron likes slightly acidic loose soil, if the basin soil is alkaline or irrigates alkaline water for a long time, it will absorb nitrogen, iron and other elements in the root system, resulting in plant yellowing due to iron deficiency. Therefore, in order to prevent your yellowing disease before iron deficiency, you can irrigate a low concentration of ferrous sulfate solution with a concentration of about 0.2%, so that the leaves will not yellowing and dry off, and a few drops of edible rice vinegar can also be added to the water for watering flowers. it can also increase the acidity of the soil and prevent the soil from being too alkaline.

3. Element deficiency

When the plant is deficient in iron or magnesium, it will also cause chlorosis between the veins of azaleas, but the veins are still green; when there is sulfur deficiency, it will also cause the young leaves to turn yellow, turn white in severe cases and spread to the old leaves, which elements can be determined by leaf analysis and soil analysis, and then supplement the corresponding elements. Usually, iron deficiency is the most common, as long as the leaves turn yellow, it is considered to be caused by iron deficiency, but sometimes this is not the case.

4. Root malabsorption.

Under the same environment and the same management level, some varieties of rhododendron are prone to yellowing, such as "Xintiandi", "Dahong double sets" and so on. This is related to the absorptive capacity and environmental adaptability of the plant itself, especially at high temperature, especially at high temperature. When the temperature drops in autumn, it will improve or return to pear trees. This symptom is similar to iron deficiency, but iron supplementation is useless, so measures should be taken to protect and protect the roots. It is necessary to maintain a high temperature when overwintering, shade when it is hot in summer, spray water to cool the surrounding environment, maintain good ventilation, and promote the healthy growth and development of plant roots.

The above are the causes and solutions for the yellowing or shedding of rhododendron leaves. I hope I can help you. If you want to know more about it, please pay attention to us.