There are many reasons why podophyllum leaves turn yellow and fall off: if it is caused by improper watering, keep the basin soil moist and don't water it too much. If it is caused by poor light, put it in a bright place, not directly exposed to strong light. If it is caused by improper fertilization, ensure sufficient nutrients in the growth period, and water more to dilute the excess fertilizer if fertilization is excessive. If it is caused by pests and diseases, cut off the yellow leaves and spray chemicals.

Liriodendron is an evergreen shrub with many branches and dense branches; Palmately compound leaves with 5-8 leaflets, rectangular, leathery, dark green and shiny; Panicle with red flowers and crimson berries. Sexually fond of warm, humid and semi-sunny environment, it should be born in deep and fertile acidic soil, slightly barren. Subtropical rain forests originating in Oceania, China, Guangdong, Fujian and South America are also distributed in Japan, Vietnam and India, and are now widely planted all over the world.