A coco grow bag is a compressed unit of coir substrate inside a film sleeve. It ships dense and dry, the grower hydrates it in place, and the crop is planted straight into it. Because the substrate and the container arrive as one unit, there is no pot to fill and no loose material to handle on site.
What separates one grow bag from another is not the film. It is the balance between how much water the substrate holds and how much air remains in the root zone once it is wet. That balance is set by the ratio of fine cocopeat to coarse coco chips, and it is the single most important decision you will make about a grow bag.
More cocopeat means more water buffer and less air. More chips means more air and less buffer. Neither is better in the abstract. The right ratio depends on your crop, your irrigation frequency and your climate, and a supplier who recommends the same blend to everyone is not paying attention.
Water holding capacity and air-filled porosity measured across our standard range. Higher cocopeat content holds more water; higher chip content moves more air.
| Blend (cocopeat : chips) | Water holding capacity | Air-filled porosity | Typically used for |
|---|---|---|---|
| 100 : 0 | 7.32 L/kg | 5.2% | Propagation, nursery, tabletop strawberry, low-frequency irrigation |
| 80 : 20 | 6.73 L/kg | 10.2% | Greenhouse tomato, cooler climates, controlled irrigation |
| 50 : 50 | 5.66 L/kg | 21.0% | Cucumber, bell pepper, high-frequency fertigation |
| 20 : 80 | 5.42 L/kg | 25.06% | Blueberry, warm climates, deep planter bags |
| 0 : 100 | 4.77 L/kg | 30.8% | Berries, orchids, maximum drainage |
EC measured by the 1:1.5 volume extract method. If your specification uses saturated media extract, tell us and we will supply the equivalent figure. The two differ by roughly a factor of two, and it is the most common reason a perfectly good sample gets rejected.
Our low-EC grade is washed with water alone. More than six rinse stages across roughly a week bring EC below 0.5 mS/cm, with no chemical treatment of any kind. pH sits naturally between 5.5 and 6.8.
Calcium buffering is a separate chemical process, carried out only when a customer specifically asks for it. Our standard product is unbuffered and washed naturally.
Three things decide the blend, and none of them is the crop name on its own.
Irrigation frequency. The more often you irrigate, the less buffer the substrate needs to hold and the more you benefit from air. A grower running twenty short shots a day can use a far more open blend than one irrigating three times.
Climate and season. Warm, bright conditions drive transpiration and dry the slab quickly, which favours retention. Cool, dull winter conditions slow uptake, and a retentive slab that was ideal in July can suffocate roots in January. Growers with long seasons often accept slightly more air than summer alone would suggest, precisely to survive the winter.
Root volume per plant. A shallow strawberry trough holds a small volume and dries fast, so retention matters. A deep planter bag holds far more, and water collects at the base further from the roots, so drainage matters more.
Crop-specific recommendations, with the reasoning, are on our tomato, strawberry, cucumber, capsicum and blueberry pages.
If you are moving from an existing supplier, send us the specification you currently work to. Matching a known specification is usually easier than starting from a crop name, and we will tell you honestly whether we can meet it before you order.
Most grow bag orders are not catalogue items, because slab length has to suit gutter spacing and hole layout has to suit plant density. Everything below is made to order:
Blending and packing are done to your requirement. Tell us your crop, gutter or bed spacing, plant density and irrigation frequency, and we will propose a specification rather than ask you to choose from a list.
We are a manufacturer. Production, washing, drying, blending and packing all happen at our own facility in Peravurani, Thanjavur district, Tamil Nadu. We are not a trading office placing orders with third-party units, and visitors are welcome.
There is no minimum. We will take a single container. Many suppliers will not quote below three or five containers, which makes trying a new source expensive. We would rather take one container that ships correctly and earn the second order.
It depends on compressed dimensions and stacking, so we confirm the loaded figure against your exact specification before quoting rather than giving an estimate.
All our EC figures are measured by the 1:1.5 volume extract method. If your specification uses saturated media extract, tell us and we will supply the equivalent figure. The two differ by roughly a factor of two.
Yes. Blending and packing are done to your requirement. If your crop needs 65:35, or a particular particle grade, slab length, drainage hole layout or printed film, that is what we produce.
Our standard product is unbuffered, washed with water alone. Calcium buffering is a chemical treatment we carry out only on request. The two are often confused: washing with water removes the loose salts and brings EC down, while buffering uses a calcium solution to displace the sodium and potassium bound to the exchange sites. Low EC does not require any chemical at all.
No to both, and we say so plainly. We wash and screen but do not heat-treat, and we do not currently test for pathogens, so we do not describe the product as pathogen-free. We do not hold organic certification.
Yes. Every sample ships with the batch test report for that exact production lot, and we retain a sealed duplicate under the same batch number.
Crop guidance: Tomato · Strawberry · Cucumber · Capsicum · Blueberry
Our products: 5 kg blocks · Coco chips · 600 g bricks · Open-top bags · Coir fibre
Read next: Buffered vs unbuffered · Quality and laboratory · Private label and OEM
Factory Address:
243, chellaiah street, Ruthrachintamani, peravurani, Aranthangi 614612 TN
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