Trellis nets are square-grid plant support screens — strung horizontally above your cannabis canopy to spread growth flat, expose every bud site to direct light, and hold up heavy colas in late flower. The SCROG (Screen of Green) technique relies on them. We've been stocking grow gear in Amsterdam since 1999, and a trellis net is still the single cheapest upgrade you can make to a tent grow. Buy it once, tuck weekly, watch your yield climb.
SCROG Net Buying Guide — Trellis Nets for Cannabis
A SCROG net is a trellis screen with a 5x5 inch (roughly 12x12 cm) square mesh, fixed horizontally above the medium so you can weave branches through the squares and build a flat, even canopy. That's the whole trick. Instead of one dominant cola and a dozen shaded popcorn buds, you get 15-25 bud sites sitting at the same height under the light.
The two products in this category cover the core use case: ScrOG Netting by Royal Queen Seeds (two variants sized for 15-18mm and 19-22mm tent poles, clipping straight onto the frame of a 120x120 tent and trimming down for smaller spaces), and LST Plant Training Clips — which aren't a net but pair naturally with one, letting you bend branches down into the screen before they're long enough to weave.
Trellis Net vs Bare LST — Which Do You Actually Need?
| Method | Setup time | Best for | Yield lift vs untrained |
|---|---|---|---|
| LST clips only | 5 min/plant | 1-2 plants, short veg, autoflowers | 20-30% |
| Single SCROG net | 15 min install + weekly tucking | 2-4 photoperiod plants in a 80x80 to 120x120 tent | 40-60% |
| Double-layer trellis (SCROG + support net) | Add a second net at 25-30 cm above the first | Heavy indica-dominant strains, big yielders | Prevents branch snap in week 6-8 of flower |
The numbers aren't marketing — a 2018 Mills & Lu study on indoor canopy management found horizontal canopy spread increased usable light interception by up to 50% versus vertical growth. That's your extra bud, right there.
Mesh Size, Height and Installation
Stick with 5x5 inch (12x12 cm) squares for cannabis. Smaller mesh makes tucking fiddly; larger mesh lets branches flop without support. Install height sits 15-30 cm above the soil surface — low enough that you're weaving the plant through the net during late veg, high enough that the main stem has room to branch before it hits the screen.
For a 120x120 tent, the RQS net clips onto the corner poles and tensions across the full footprint. For a 60x60 or 80x80, trim it down. Yes, the 60x60 tent technically fits a SCROG setup. You'll still only get 1-2 plants in there comfortably — don't expect 120x120 yields from a shoebox.
Elastic vs Static, Single-Use vs Reusable
Two camps here. Static nets (rigid nylon or polypropylene, like the RQS set) hold their shape, make tucking predictable, and survive multiple grows if you clean them between runs. Elastic nets flex with the plant and are easier to remove at harvest but sag under heavy buds — not what you want in week 8.
Honestly? For cannabis, static wins. The elastic stuff is better suited to tomato trellising. If you want a net you'll reuse for 3-5 grows, rinse it with isopropyl after harvest and store it flat. Don't cut branches out of the mesh at harvest if you can help it — unthread them, the net lasts longer.
How to Set Up Your Trellis Net — Start Here
New to SCROG? Order the RQS ScrOG Netting in the variant that matches your tent pole diameter (15-18mm or 19-22mm — measure before you buy), grab a pack of LST Plant Training Clips for the first two weeks of bending, and install the net the moment you flip to 12/12. Tuck every 2-3 days for the first fortnight of flower, then stop — once pistils appear, let the colas rise vertically through the squares and the net becomes pure support.
Shop both products below. If you're buying one thing, buy the net — the clips are a nice-to-have, the net is the whole technique.
Frequently Asked Questions
What mesh size should a cannabis trellis net be?
5x5 inch (12x12 cm) squares are standard for SCROG cannabis grows. It's big enough to tuck branches through comfortably and small enough to support bud sites in late flower. Smaller mesh makes weekly tucking a pain; larger mesh won't hold heavy colas upright.
Do I need one SCROG net or two?
One is enough for most grows. Add a second net 25-30 cm above the first only if you're running heavy-yielding indica genetics that tend to snap branches in week 6-8 of flower. The second layer is pure support — no tucking, just catching colas before they topple.
When do I install a trellis net in the tent?
Install it right before or at the 12/12 flip, 15-30 cm above the soil. Too early and the plant isn't tall enough to weave; too late and the branches are already woody and won't bend without snapping. Clip it onto your tent poles and tension it flat.
Can I reuse a SCROG net?
Yes, if it's a static nylon or polypropylene net like the RQS one. Rinse with isopropyl after harvest, unthread branches rather than cutting them out, and store flat. Most reusable trellis nets survive 3-5 grows. Elastic mesh nets are closer to single-use for cannabis.
Will a trellis net fit a 60x60 tent?
Yes — the RQS ScrOG net trims down to smaller footprints. You'll be working with 1-2 plants in a 60x60, so a single scaled-down net does the job. Just don't expect 120x120 yields from the smaller tent; the net helps, but the light footprint is the limiter.
Last updated: April 2026