Soilless refers to growing plants in a medium that contains no natural soil. Instead, plants are rooted in materials such as peat moss, coco coir, perlite, vermiculite, or mineral wool, which provide physical support while water and nutrients are supplied separately.
In soilless systems, nutrients are delivered through a nutrient solution, allowing precise control over what the plant receives. This is the basis of hydroponic and many indoor growing methods, where factors like pH, electrical conductivity (EC), and moisture can be tightly managed.
Soilless media differ from soil in that they are typically sterile or low in microorganisms, have predictable structure, and drain more freely. This reduces the risk of soil-borne diseases but requires consistent fertilization since the medium itself contributes little to plant nutrition.
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