Fabric weight is the number that decides how a grow bag behaves after a season, and it is the number most listings leave out. This one runs at 300 GSM, which is heavy enough for the wall to stand up when the bag is full and for the handle anchors to hold without stretching. The felt still breathes and drains, so herbs and salad crops are not sitting in a wet layer. Handles are sewn through the wall on a double thread, and an activity window lets the crop be checked without emptying the bag.
Fabric weight is the number that decides how a grow bag behaves in its second season, and it is the number most listings leave out. At 300 GSM the wall has enough body to stand up under a full load.
At this weight the felt holds its own shape when the bag is full, so the wall does not sag inward and the root ball is not disturbed every time the bag is moved. It also gives the handle anchors something to bite into, which is where a lighter bag gives way first. The wall still breathes and drains: air reaches the root zone, surplus water leaves through the felt, and roots meet air at the face and stop rather than coiling round the base. The base is stitched to take being dragged rather than lifted every time.
Herbs, salads and vegetables all run in the same wall, on a nursery bench, a balcony rail or a patio where there is no ground to plant into. The activity window has a cover that rolls back and holds clear, so crops that finish below the surface can be checked and picked by hand. The bag also runs as a hanging format where bench space is short. The wall system is shared across the air pruning pot range.
| Use | Herbs, salads and vegetables |
| Material | Non-woven felt fabric |
| Weight | 300 GSM |
| Form | Round |
| Handles | Reinforced, double thread stitched |
| Window | Activity window with a roll-back cover |
| Base | Stitched base for dragging |
| Packing | Bag, pallet or carton |
The handle anchors are the first thing to fail on a grow bag, so they are sewn through the wall on a double thread rather than run along a single seam, and the felt around them is heavy enough not to stretch under the load. The window cover rolls back and stays clear while the crop is picked, then closes again between pickings, and the base is finished flat so the bag stands while it is filled. Starter trays sit alongside in the seedling and propagation range.
Tell us the diameters, fabric weights and colours your programme works to, since the felt is needled to the weight each format needs and a printed logo can be added on programme quantities. Orders ship in bags, on pallets or in cartons. The wider soft container range sits in the planting bag range. Container and growing media supply is covered at HortiDaily and FreshPlaza.
What does 300 GSM mean in practice?
It is the fabric weight. At this level the wall holds its shape under a full root ball and the handle anchors have enough material to hold without stretching.
Does a heavier felt still drain?
Yes. Air still reaches the root zone and surplus water still leaves through the felt, which is what stops roots sitting in a wet layer.
How are bulk orders packed?
In bags, on pallets or in cartons, with mixed sizes and fabric weights combined in one load.
Tell us the sizes, fabric weights and quantities your programme needs, and we will come back with the packing plan, sample and lead time.
Mark Wu, Co-founder & Technical Director, Sichuan Zhifang Net Industry. 15 years manufacturing agricultural nettings for growers in 32 countries.
