Relevant data show that natural organic components such as nitrogen, phosphorus pentoxide, potassium oxide and organic carbon in tea and soaked tea are very beneficial to improve soil fertility and soil structure. But "tea as flower fertilizer" does not mean directly spreading tea on the soil surface.

If the soaked tea leaves are directly put into green potted plants without fermentation, the tea leaves will ferment in flowerpots after contacting with water, and the heat generated in this process and a large number of corrosive bacteria will harm the roots of plants and hinder their growth.

There is another situation: putting tea residue directly into the flowerpot will not only affect the permeability of the pot soil, but also fail to complete the fermentation for a long time, resulting in the mildew and deterioration of tea residue, so there is no way to talk about "natural organic fertilizer".

Therefore, tea can only be used as flower fertilizer after composting. The correct way is to mix tea residue with soil in a certain proportion, pile it in a well-drained and sunny place (or container), and spray an appropriate amount of water after sealing to promote the rapid fermentation of tea residue. It takes about one month in summer and autumn and two months in winter and spring to complete the whole composting process.

Some people who love tea think that it is troublesome to compost tea residue for a long time. Then, it is not impossible to sprinkle the soaked tea directly into the flowerpot, provided that only a small amount of unfermented tea residues can be placed in larger potted plants at a certain distance from the roots, and it is not recommended to put small potted plants (such as fleshy ones).

To remind tea lovers, tea itself is alkaline, and it is more suitable as a flower fertilizer for alkaline plants. Besides being used as flower fertilizer, tea also has the function of removing fishy smell and oil when used for cleaning kitchen utensils. After drying, it can be made into tea bags and placed in refrigerators, wardrobes and other places at home, which can also play an obvious role in moisture absorption and deodorization.