Hydroponic Plants
An oxymoron? In hydroponics gardening, the growing medium replaces dirt or soil. The growing medium does not provide nutrients, but provides a structure for the roots so the plant can support it’s weight and hold itself upright. Amost any inert material can be used as a growing media. Inert means it won’t break down quickly.
Step up to the soapbox about hydroponic economics.
University level courses should include lectures on How Does Hydroponics Work