Simply put, a trellis is a net or screen framed with a lattice pattern. This framed screen is used in cultivation by positioning it either vertically or horizontally to increase the availability of grow space. The lattice pattern of the trellis also helps to ensure that there is increased light penetration. Bring this to cannabis cultivation is what we call cannabis trellising. Since cannabis is easily grown indoors and outdoors, a cannabis trellis can easily be used in both settings without hindrance.