Some aerial roots do not penetrate the soil, but become attached to other plants or objects instead.

Such material would loosen the soil so the roots of the cotton plants could penetrate more deeply.

You may have very dense, hard subsoil that roots cannot penetrate.

This will allow the roots to penetrate deeply into the soil.

The long roots penetrate and break the soil to leave it in perfect condition for the next year's crop.

The roots penetrate over 3 meters deep into the soil.

Mulga roots penetrate far into the soil to find deep moisture.

Place its basal leaves on the soil, and push the roots to penetrate downward.

This is important because roots of plants cannot penetrate beyond the active layer and are restricted by its thickness.

The roots from the trees had extensively penetrated the mound.