So far, you have not used expanded clay ? See what your plants have lost! Loosens and aerates the soil Provides air access to the root system A layer of expanded clay added to the bottom of the pot (2-3cm) prevents the plant from overflowing and does not lead to root rot The pot has a hole in the bottom with a rubber stopper The main reasons why it is an essential element: The holes provide drainage of excess water, which prevents root rot and mold growth, to ensure even better drainage, it is also good to pour a layer of expanded clay on the bottom, which will additionally isolate the roots of the plants from the bottom. The plugs in the pot also have a ventilation function,