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Hydroponics

The name comes from the Greek "hudor" for water and "ponos" for work hence the word hydroponics meaning "waterworking".

An easier term to use is soilless gardening. Soilless gardening can be divided into two sub-groups:

• Plants grown in an inorganic medium
• Plants grown without a medium

But in both cases the plant roots are supplied with a nutrient solution made by dissolving nutrient salts in water.