Hello, the topic, Baihua Zatan hopes to communicate with you. At present, there are two opinions on whether the left-over tea can be mixed with soil to prepare flowers. One view is that the cultivation of flowers with residual tea is beneficial to plant growth. The reason is that tea residue contains various elemental fertilizers, such as rich potassium oxide, phosphorus pentoxide and organic carbon, which can supplement the nutrients that flowers lack, especially acid-loving potted plants. Mixing soil with residual tea is the best. Another view, on the contrary, is that residual tea contains alkalinity, which will affect the absorption of organic nutrients in the soil by plants, and has little effect on the growth of plants, especially on acid-loving flowers and trees. In order to find out this problem, I have done experiments. The experimental results show that the residual tea is not suitable for planting flowers and trees in pot soil. The experimental process is as follows: the residual tea after soaking in water is collected, put into plastic bags for sealed fermentation, and the fermented residual tea is smashed into mud, and then stirred with soil as pot soil. Results After a period of time, the white powdery substance appeared on the surface of the basin soil, and the tongue licked it, which made it feel salty. The most intuitive feeling was that the basin soil was hardened, with poor water permeability, and it was soaked like mud and dry and hard. After consulting the information, we know that tea itself is alkaline, and tea contains theophylline and caffeine, which have a destructive effect on the organic nutrients in the soil and are not conducive to the growth of potted flowers. In particular, I like acidic flowers and trees, such as Clivia, Jasmine, Milan, etc., and it is not suitable to use residual tea and soil to mix as planting soil. As for some flower friends, they like to cover the surface of pot soil with residual tea, which is even worse. Residual tea covers the surface of the pot soil, and it gradually becomes moldy and rotten over time. The pot soil is in a wet state for a long time, which produces harmful gases, harms the roots of flowers, and breeds a winged bug that flies all over the room. It&;s unbearable. Furthermore, according to my own practice, tea leaves are all made from tender leaves of tea trees, and tender leaves have no fiber. Using leaves retting without or with little fiber to make pot soil will not loosen the soil, but will lead to hardening of the pot soil. We choose rotten leaves, and it is better to use leaves and substances containing much fiber, such as pine needles, cottonseed shells and peanut shells. Such as vegetable leaves should not be selected. This answer lacks theoretical basis, and it is just my personal opinion on flower cultivation. If there is any fallacy, please criticize and correct me.