Liriodendron likes semi-shade, Liriodendron adapts to a wide range of light, and can grow in full light, semi-light or semi-shade environment. However, the intensity of light has a certain relationship with the color of leaves. When the light intensity is high, the color of leaves turns pale, and when it is half cloudy, the color of leaves turns dark green. Generally cultured in bright scattered light. If placed in a dark room, it will affect the growth of Liriodendron chinense and cause the leaves to fall off. However, it is not suitable for exposure to strong sunlight, and leaves are easy to wither and fall off under sunlight.

2. Humidity

Humidity includes air humidity and soil humidity. Liriodendron prefers wet to dry. It grows well in the environment with high air humidity and sufficient soil moisture, but it has strong adaptability to the dry climate in the north. Pay attention to the pot soil can not be short of water, otherwise it will cause a large number of leaves to fall off. Water should be properly controlled under low temperature conditions in winter. But too much water will cause waterlogging and root rot. If the basin soil is short of water or dry and wet for a long time, defoliation will occur. The dry humidity of basin soil should be adjusted at any time according to the changes of environment and weather.

fertilize the soil or land

Liriodendron has certain requirements for fertilizers, especially in the growing period. If the fertilizer is insufficient, the leaves of Liriodendron will turn yellow and fall off. Rich, loose and well-drained sandy loam is suitable for this kind of soil. Potted soil is a mixture of peat soil, humus soil and coarse sand. For varieties with patched leaves, if the nitrogen fertilizer is less and the nitrogen fertilizer is too much, the patch will fade and turn green. Every spring, before new buds sprout, flowerpots should be replaced, some old soil should be removed and potted with new soil.

4. Pests and diseases

It is mainly harmful to leaf spot and anthracnose, and can be sprayed with 10% antibacterial agent 40 1 acetic acid solution 1000 times. The pests are mainly scale insects, spraying 40% omethoate EC 1000 times. In addition, 3000 times of 10% permethrin EC can be used to spray red spider, thrips and liriomyza sativae. Liriodendron is highly sensitive to ethylene, and it is easy to defoliate during storage and transportation. In order to prevent Liriodendron from being damaged by ethylene during storage and transportation, 0.4 ~ 0.5 mmol/L silver thiosulfate solution can be sprayed 2 ~ 3 weeks before transportation to inhibit the production of ethylene in potted Liriodendron.