Product · Open top planter bags
Open Top Planter Bag Manufacturer in India
Substrate and container in one unit
You place it, cut the top open, hydrate it, and plant into it. There is no separate pot to buy, fill, store or dispose of, and no loose substrate to handle on site.
- Bag volume
- Made to order
- Blend
- 100% pith to 100% chips
- Low-EC grade
- Below 0.5 mS/cm
Open top planter bag establishment
- Empty planter
- Substrate filling
- Irrigation
- Roots establish
- Crop establishment
The format
When an open top planter bag beats a slab or a pot
An open top planter bag arrives as a compressed unit of coco substrate inside its own film sleeve. You place it, cut the top open, hydrate it, and plant into it. There is no separate pot to buy, fill, store or dispose of, and no loose substrate to handle on site.
For growers, that removes the most labour-intensive part of establishing a crop. Filling pots is slow, dusty work that has to happen in a short window before planting. A planter bag turns it into placing a unit and adding water.
Compared with a flat slab, the open top format gives a deeper root volume per plant. That suits crops with a larger root system, longer cycles, or situations where you want more buffer against irrigation failure than a shallow slab can hold.
Establishment
Placed, filled, irrigated, planted
The bag is the container. Everything that happens to it happens in the growing position.
The deeper the bag, the more the base matters. Water collects at the bottom of any container, and in a planter bag that saturated zone is further from the plant than it would be in a slab. The blend has to keep air moving through the lower profile.
Schematic of the bag in section. A Phase 5 animation will fill, irrigate and root it in sequence; this is the drawing that stands in for it.
Open top planter bag establishment
- Empty planter
- Substrate filling
- Irrigation
- Roots establish
- Crop establishment
Applications
Where growers use coco planter bags
- Berry production Blueberry, raspberry and blackberry need a deep, free-draining root volume. A high-chip blend gives the air-filled porosity these crops require while holding enough water between irrigations.
- Long-cycle protected vegetables Where a grower wants more root volume than a slab provides — larger tomato or pepper plants, or a crop being carried longer than usual.
- Nursery and propagation Uniform units that can be placed by hand, hydrated in place and planted the same day.
- High-value crops Where legal for commercial horticulture, and where root volume per plant is generous.
- Trials and new sites The bag is self-contained, so growers use planter bags to trial coco substrate before committing a whole house to a gutter and slab system.
- Cane fruit Perennial crops in five to ten litres per plant, where the base of the container decides the crop.
Reference blends
Choosing the blend for an open top planter bag
The deeper the bag, the more the base matters. Water leaves the base of a high-chip blend quickly instead of sitting there.
-
Usual starting point
20 : 80
Cocopeat to chip
- Water holding capacity
- 5.42 L/kg
- Air-filled porosity
- 25.06 %
- WaterSmall working buffer
- AirAir through the whole profile
Suits deep bags, berry crops and high-rainfall or high-humidity conditions.
-
0 : 100
Straight coco chips
- Water holding capacity
- 4.77 L/kg
- Air-filled porosity
- 30.8 %
- WaterLeast buffer
- AirMaximum air
The most open option, where water has to leave the base as fast as it arrives.
-
50 : 50
Cocopeat to chip
- Water holding capacity
- 5.66 L/kg
- Air-filled porosity
- 21.0 %
- WaterLess buffer
- AirMore air
Suits most protected vegetable work in a planter bag, where you want drainage without giving up buffer.
-
80 : 20
Cocopeat to chip
- Water holding capacity
- 6.73 L/kg
- Air-filled porosity
- 10.2 %
- WaterRetentive base
- AirEnough chip to keep air moving
Holds more water. Suits nursery work, drier climates, and systems where irrigation is less frequent.
Full properties across our blend range, with water holding capacity and air-filled porosity for each, are on the coco grow bags page. The relationship between chip content and root-zone air is explained on the coco chips page.
Bag volume, blend ratio, hole layout and print are all made to order — tell us your crop, plant density and irrigation frequency and we will propose a specification.
EC figures use the 1:1.5 volume extract method.
Specification
Open top planter bag specification
| Attribute | Specification |
|---|---|
| Format | Compressed coco substrate in a sealed film sleeve, opened at the top on site |
| Blend | Any cocopeat-to-chip ratio, from 100% cocopeat to 100% chips |
| Particle grade | Fine, medium or coarse pith; chip grades 6–12 mm, 12–18 mm or 18–25 mm |
| EC, low-EC grade | Below 0.5 mS/cm, washed with water alone, no chemical treatment |
| pH | 5.5 to 6.8 |
| Buffering | Calcium buffering is a separate chemical process, on request only |
| Compressed and expanded dimensions | Made to order |
| Drainage holes | Count, diameter and position to your specification |
| Film | UV-stabilised; colour to specification |
| Plain or your own artwork and batch labelling | |
| Units per 40′ HC and MOQ | Available on request |
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.
Questions
Planter bag questions buyers ask
We are a manufacturer. Blending, compression, filling and packing all happen at our own facility in Peravurani, Thanjavur district, Tamil Nadu. Visitors are welcome.
Compressed and expanded dimensions are made to order. Tell us the litreage your growers plan around and we will compress to hit it.
The deeper the bag, the more the base matters. Higher chip content, at 25.06% or 30.8% air-filled porosity, suits deep bags, berry crops and humid conditions. Balanced blends around 21% suit most protected vegetable work.
Yes. Hole count, diameter and position are all made to your specification, and they determine how the base of the bag behaves.
The 1:1.5 volume extract method. If your specification uses saturated media extract, tell us and we will supply the equivalent figure.
Yes. Film colour, gauge and your own artwork and batch labelling are all made to order.
Keep reading
Related products, crops and technical guides
Tell us your bag volume and we will compress to hit it.
Tell us your crop, bag volume and irrigation frequency, and we will propose a specification.