The “medium” is the substance in which the plants roots are held. This can be traditional soil, coco coir, rockwool, clay, sand, pebbles, or other solid media. Every growing media has its own perks and drawbacks, and many growers will have a preferred medium.
English
Etymology
Borrowed from Latin medium, neuter of medius (“middle”). Compare middle. Cognate with Spanish medio (“middle; half; means, medium, way
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