Rhododendron cultivation techniques: ten attention

Rhododendron cultivation techniques: ten attention

Azaleas are sensitive to strong sunlight. Direct exposure can cause sunburn, while excessive shading may lead to weak growth and difficulty in forming flower buds. They thrive best in slightly acidic soil with a pH around 6. If the soil becomes too alkaline, the leaves will gradually turn yellow from the bottom up and may eventually die. Physiological iron deficiency can also be an issue, as it affects chlorophyll production, causing the leaves to become smaller and pale yellow. Azaleas have shallow roots, so they are not tolerant of extreme temperatures below 10°C. They prefer cooler conditions but should not be exposed to hot and humid environments, which can harm their delicate root systems. Their fine root structure makes them vulnerable to drought, so they require high humidity—ideally between 70% and 90%. Watering must be done carefully; overwatering can damage the roots and cause older leaves to drop prematurely, while underwatering can result in yellowing new leaves or drooping petals during flowering. If the plant lacks water during the leaf development stage, the center of the leaves may curl and turn yellow. Nutrient deficiencies also affect azaleas. A lack of nitrogen leads to thin leaves, weak branches, and small, sparse flowers. Phosphorus deficiency causes reddish-purple discoloration on some leaves and increased leaf drop, while potassium deficiency results in gray-green old leaves, mottled foliage, and eventual browning and drying of the leaves. Over-fertilization is equally harmful. Excess fertilizer concentration can cause reverse osmosis, leading to root shrinkage and loss of leaf luster, followed by leaf drop. Poor air circulation can also cause leaf fall, as stagnant air hinders healthy growth. Azaleas are also sensitive to frost and snow. During winter, temperatures around 8°C are ideal. If kept in a room that's too warm, the plant may not enter dormancy properly, continuing to consume nutrients and affecting its growth for the following season.

Laptop Black And White Diagnostic Ultrasound Equipment

This black and white ultrasound instrument has the appearance of a laptop shop brain, featuring portability and ease of operation. It adopts a lightweight design with light weight and small size, making it easy to carry and move around. It is also equipped with a user-friendly operation interface and intelligent function settings, enabling doctors to perform ultrasound examinations quickly and accurately.

therapeutic ultrasound equipment,portable ultrasound machine,hand held ultrasound machine

Sichuan Krayson Electronic Technology Co., Ltd , https://www.sckrayson.com