Water flowers with residual tea: Water flowers with residual tea can not only keep soil moisture, but also supplement plants with nutrients such as nitrogen. But according to the humidity of the flowerpot, water it regularly and properly, instead of pouring the residual tea.

Planting flowers with coal cake ash: when planting flowers with coal cake ash, unburned black coal should be removed first, and larger particles should be screened out, and a layer of coarse cinder should be placed under the flowerpot. Then cover the coarse cinder with a layer of decomposed cake fertilizer, poultry manure, bone meal, etc. Finally, cover it with a thick layer of fly ash so that it can be planted. In addition, in order to prevent rain from washing away, prevent sun and water, the top layer can also be covered with a layer of coarse coal ash.