The complete guide
Trellis Netting Buyer's Guide, How To Choose And Set Up Plant Support Netting
The problem with plants that will not stand up
Anyone who has grown tomatoes knows the moment. The plant looks great for weeks, then the first heavy truss sets and the whole thing starts to lean. You add a stake. A week later a side branch snaps under its own weight. By mid season the patch looks like a wrestling match between you, the twine and the plants.
Cucumbers do something similar, except they sprawl. Left on the ground, the fruit sits in damp soil, picks up marks, and gets found by slugs before you find it. Peas and beans just grab at whatever is nearest, which is often each other, and you end up with a tangled mat that is impossible to pick through.
The fix is simple and old. Give the plants a grid to grow into. Trellis netting does that across a whole bed or tent at once instead of one plant at a time, and it does it for a few dollars of material rather than a shed full of cages.
What this net actually is
This is a polyester net measuring 1.52 m by 4.57 m, which works out to about 6.97 square metres of coverage. The openings are 15.24 cm square, or 6 x 6 inches in the old measurements. It is white, it weighs 0.07 kg, and one net comes in the pack.
The construction is interwoven, meaning the strands are locked where they cross rather than simply laid over each other. That is the part that matters in use. A net with loose junctions goes diamond shaped the moment weight pulls on one side, and once the grid distorts, the openings change size and plants get pinched. Locked junctions keep the squares square.
The strands themselves are smooth. Stems rub against a net constantly as wind moves outdoors or fans cycle indoors, and a rough surface slowly wears a groove into soft tissue. A smoother polyester trellis net is kinder to that contact point.
Why 15 cm openings are the right size
Mesh size is the spec people get wrong most often. The instinct is to go small, on the logic that smaller holes catch more. In practice, small mesh makes life hard.
Try pulling a full size cucumber back out through a 5 cm opening. You cannot. You end up cutting the net or damaging the fruit. Now try putting your hand through to pinch out a side shoot deep in the canopy. Also no.
At 15 cm, an adult hand and forearm go straight through. You can reach in to tie a stem, pinch a tip, check for pests or take a fruit out without fighting the net. That is the whole point of a 15 cm mesh trellis net, and it is why this size has become the standard for indoor growers and serious vegetable gardeners alike.
The openings are still small enough to do the job. A tomato truss rests on a strand. A branch pushing sideways catches on the next cell along. Vines wrap through naturally without any help from you.
The three ways to hang it
Flat and horizontal. This is the grow tent approach. You stretch the net across the growing area at a fixed height, usually somewhere above the pots where the plants start to branch out. Plants grow up through it, the net catches the branches, and the canopy spreads sideways instead of racing upward in a single column. You get more even light across the plants and fewer tall weak stems. As the crop builds, a second layer higher up adds more support.
Vertical. Run the net upright between posts, along a fence, or down one side of a frame. Climbing plants go straight up it. This is the classic approach for peas, beans and cucumbers, and the benefit is simple, the fruit hangs in open air where you can see it, and the leaves stay off wet soil. Vertical trellis netting also saves a huge amount of ground space in a small garden.
A-frame. Two sloped frames leaning together with the net draped over both. This one suits heavier ground crops. Squash, eggplant and large cucumbers hang down under the slope where they are easy to spot, and the shaded soil underneath holds moisture a bit longer. It is also a nice use of a path edge or an awkward corner.
You are not locked into one choice. Cut the roll into two or three pieces and run a horizontal net in the tent plus a vertical section along the back fence.
Setting it up without the usual mistakes
Tension is everything. A net hung loose will sag the moment fruit loads onto it, and once it sags, the plants slump with it and the whole structure stops working. Pull it taut when you fix it, anchor all four corners first, then add fixings every half metre or so along the edges.
Put the net up before the plants need it. This is the single most common error. Threading a half grown tomato through a grid is fiddly and you will snap something. Set the net early and let the plants find it on their own.
Think about access when you pick your mounting points. Leave yourself a way to get to the back of the bed or the far corner of the tent. A net stretched wall to wall with no access gap looks tidy and becomes annoying in about three weeks.
For fixings, zip ties, soft garden twine and clips all work. The net is cut to fit, so measure your run, cut through the middle of a cell rather than right at a junction, and keep the offcut for later.
Through the season
Once the net is up, the job becomes gentle steering. Every few days, walk the bed and tuck wandering shoots into the nearest opening. Spread branches so they fill empty cells instead of piling into one spot. It takes a couple of minutes and it keeps the canopy even.
Watch for stems that have wedged into a corner as they thicken. If a shoot has got itself jammed, ease it out and redirect it before it marks. Most plants are forgiving if you catch it early.
At harvest, reach through and pick normally. That is the payoff for the larger mesh.
Cleaning and storing
At the end of the crop, leave the spent plants to dry for a few days. Dry stems break cleanly and come away from the mesh in pieces. Wet living vines do not, and pulling at them stretches the grid.
Work along with secateurs and clear the net in sections. If it has gone sticky or grubby, hand wash in lukewarm water with a mild detergent, rinse it, and hang it to dry completely before packing. Damp storage is how nets end up smelling off.
Roll or fold it loosely and keep it somewhere dry and out of the sun. Keep it clear of heaters and open flame. A reusable garden trellis netting panel that is stored properly comes out of the bag the next season ready to go.
Who it suits
Indoor growers with a tent will get the most obvious use out of it, because horizontal support is close to standard practice for keeping a canopy flat and well lit. Outdoor vegetable growers get just as much from it, particularly anyone short on space who wants to grow upward rather than outward.
It also suits people who are tired of the stake and string routine. One net handles a whole row at once, and it keeps working while you are away for a weekend.
If you only grow a couple of pots on a balcony, a full 4.6 m roll is more than you need, though you can cut a section and store the rest. For a bed, a row or a tent, it is about right.
The short version
This is a 1.52 x 4.57 m white polyester net with 15 cm square cells, interwoven so the grid holds its shape, and light enough at 0.07 kg to handle on your own. Cut it to fit. Hang it flat in a tent, upright along posts, or over an A-frame outdoors. Mount it tight, mount it early, and tuck the shoots in as they grow.
Do that, and the plants carry their own fruit instead of leaning on you.