After National Day, the Radermachera (China doll) drops leaves over a large area; an old flower farmer says if these 3 points are ignored, it will drop them all

The Radermachera is a very popular foliage plant for the home; its tree shape is beautiful, its posture elegant, and its leaves are numerous and emerald green, giving it very high ornamental value. When it blooms, the flowers are extra large and carry a faint floral fragrance; there are flower clusters on almost every branch, and many flowers open at the same time on the cluster, arranged in a long string of golden-yellow flower bands, super beautiful!
National Day has just passed, and some flower lovers report that their Radermachera often drops leaves. What is going on? I know an old flower farmer, and he says these situations happen because these 3 points are ignored, so even dropping them all is normal.
1. Watering too much
The Radermachera likes a moist environment, but after National Day the weather cools quickly, the Radermachera's activity decreases somewhat, and on top of that it has no main root, mostly only fine hair roots, so its ability to take up water is limited. Some flower lovers still water on the previous schedule, which causes continuous leaf drop. In fact, you should keep it appropriately dry, and only water thoroughly when you see the potting soil showing a whitish sign; never let water accumulate.
2. Insufficient light
The Radermachera is a light-loving plant. After autumn begins, sunlight intensity is lower, and if it is then placed in a shady spot with little light, it easily causes leaf drop and a poor condition. So move it to a place with a longer period of light for care, which can promote photosynthesis, speed up metabolism, and make the branches and leaves more emerald green and glossy.
3. Ventilation is too poor
The Radermachera needs good ventilation. Some flower lovers, because of the layout of the room and so on, put the Radermachera in a corner, resulting in extremely poor ventilation, which causes large areas of dry tips, yellow leaves, and leaf drop.
Move it to surroundings with air circulation; only then can the Radermachera grow better and avoid situations like yellow leaves and leaf drop.
The care of the Radermachera is introduced here. If flower lovers have other additions, you can share them with everyone in the comment section below. If you want to learn more about flower-growing knowledge, you can follow Huajianke!