HORTOMALLAS® Cannabis Trellis Netting

Six-inch square is the working standard for cannabis screen-of-green, and the SCROG soft polyester line is 6″ × 6″. The polypropylene HORTOMALLAS line is 5.9″ × 6.7″ — a slightly rectangular opening from the bi-oriented extrusion process, which in practice supports a cannabis canopy the same way. Both are wide enough to reach through for defoliation and harvest, and tight enough to catch lateral branching at the internode.

They describe how the net is used more than what it is. A SCROG net is run horizontally over the bed so tops grow up through it and the canopy flattens to an even light plane. Trellis netting is the same material run either horizontally or vertically between posts to support the plant as it stretches. Here the practical difference is the material: extruded polypropylene for structural support and long service life, soft polyester where you want give against the stem.

Most commercial rooms run two. The first goes on before stretch and sets the canopy plane; the second goes 8–12 inches above it once the plants push through, and carries the flower weight late in bloom. Short-cycle or lower-yielding cultivars are often fine on one layer. Because the rolls are continuous, you cut each layer to the exact bay length rather than splicing panels.

The polypropylene line is rated 5–7 years of UV exposure, which for an indoor or greenhouse room is a conservative floor, and it is rated resistant to bacteria, mould and common agricultural chemicals so it can be cleaned between crops. Whether you reuse it is usually a labour decision rather than a material one: stripping spent growth out of a net can cost more than the net.

Work in linear feet per layer: bed length × number of rows × layers. Ten rows of 100 ft beds is 1,000 linear feet per layer, so a 4,920 ft roll covers roughly four to five such rooms single-layer, or two at two layers deep. Pick the width from your bed, not your room — 4 ft, 5 ft and 6.5 ft are stocked, 10 ft is available, and other sizes can be special produced.

Match the net width to the bench or bed width so the edges land on your support points. Standard 4 ft and 5 ft benches take the 4 ft and 5 ft rolls run lengthwise; 6.5 ft suits wider beds, taller screens, or a double-layer install where you want margin to tension against. Minimum order is 5 rolls.