We all know roots are essential for plant development. Problems with roots always effect production: or the amount or the quality.
Below several types of rooting: from dry deep growing till balanced roots all over the substrate.
Good roots
– have oxygen in the rooting zone (air between the particles)
– are everywhere in the substrate (from top till bottom)
– are white
If you see these pictures, just think in terms of how much water and fertilizer the plants may take up.