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Professional horticulture · Cucumber

Cucumber Grow Bag Manufacturer in India

Coco substrate for greenhouse cucumber

Cucumber grows fast and transpires heavily, so the substrate has to deliver a large volume of water through the day without the root zone ever becoming saturated. We blend, compress, fill and pack to your gutter layout at our own facility in Tamil Nadu.

Request a specification See all five blend ratios
A cucumber on the vine beside an open yellow flower, photographed close.

Substrate requirements

High water demand, low tolerance for a wet slab base

Those two requirements pull in opposite directions, which is why cucumber growers tend to run high irrigation frequency with a generous drain percentage and want a substrate that empties predictably between shots.

  • Air-filled porosity 21.0 % The 50:50 blend. Drainage a high-frequency fertigation programme needs, without giving up the buffer.
  • Water buffering 5.66 L/kg A real water buffer at that air fraction, measured across the same blend.
  • Transpiration Heavy The crop grows fast and moves a large volume of water through the day.
  • Wet slab base Less forgiving than tomato Growers moving from a very retentive medium often find they need more air, not more buffer.

Compared with tomato, cucumber is generally less forgiving of a slab that holds water at the base. Growers moving from a very retentive medium often find they need more air, not more buffer.

One high-wire cucumber cycle on a coco slab — vine, leaves, tendrils, flowers, fruit.

Reference blends

Which coco blend suits greenhouse cucumber

Three of the five reference blends are relevant to greenhouse cucumber.

  • Usual starting point

    50 : 50

    Cocopeat to chip

    Water holding capacity
    5.66 L/kg
    Air-filled porosity
    21.0 %
    • WaterLess buffer
    • AirMore air

    Our usual recommendation for greenhouse cucumber. It gives the drainage a high-frequency fertigation programme needs while retaining a real water 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

    Suits cooler climates, shorter cycles, or systems with fewer irrigation events per day where the extra buffer is worth having.

  • 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

    Worth trialling in hot conditions, or where root health problems have appeared in the lower slab in previous crops.

These are starting points from measured properties. Tell us your irrigation frequency, drain percentage and climate and we will suggest a ratio, including one that is not on our standard list.

Blending and packing are done to your requirement. Ratios, particle grade, compressed dimensions, hole configuration, film and print are all made to order. Tell us what your crop and your handling line need and we will produce to it.

EC figures use the 1:1.5 volume extract method.

A high-wire cucumber crop in a greenhouse, vines trained up strings above coco substrate slabs.
In production High-wire cucumber under glass: vines trained up strings to the wire, broad leaves shading the fruit, slabs running the length of the gutter beneath them.

Root zone

What happens in the root zone

Water and air compete for the same pore space. On a crop that transpires this heavily, how quickly the slab empties matters as much as how much it holds.

A section through the growing container: the fine pith fraction holding water low in the profile, the coarse chip fraction holding air above it, roots working through both, and free drainage at the base. The particle proportion shown is the 50 : 50 cocopeat to chip ratio.

50 : 50 cocopeat to chip — the blend this page leads with, drawn in proportion

  • Fine pith fraction Holds the water. Deeper in the profile as the fine fraction rises.
  • Coarse chip fraction Holds the air. The pore space between the flakes is what keeps the profile open.
  • Root zone and drainage Roots work through both fractions; what the profile cannot hold leaves at the base.
  1. 01 Water Held in the fine pith fraction, and drawn down fast by a heavily transpiring crop.
  2. 02 Air Held in the coarse chip fraction. Cucumber wants more of it than tomato does.
  3. 03 Slab base Where a retentive medium fails this crop. It has to empty predictably between shots.
  4. 04 Drain percentage Generally run generous, which the blend has to be able to support.
  5. 05 Irrigation frequency High frequency needs more air and less buffer. Low frequency needs the reverse.

Tell us your irrigation frequency, drain percentage and climate, and the ratio follows from those three.

Made to order

Custom cucumber grow bags and drainage layout

Everything below is produced to order, because slab length has to suit gutter spacing and hole layout has to suit plant density.

  • Blend ratio Any proportion, not only our standard steps.
  • Compressed and expanded dimensions Cut to your gutter and bed layout.
  • Planting holes Count and spacing for your plant density.
  • Drainage holes Position and diameter, which decide how the base of the slab behaves.
  • EC level Washed to low EC, or unwashed if you process in-house.
  • Buffering On request, or supplied unbuffered.
  • Film and print Plain or your own branding.
A coco substrate slab in a greenhouse gutter carrying an established cucumber plant.

The substrate in service

A coco slab under a cucumber crop: drainage cuts positioned for the gutter fall, and a profile blended to stay open at the base through a fast, heavily irrigated crop.

  • Blend ratio Any proportion, not only our standard steps.
  • Compressed and expanded dimensions Cut to your gutter and bed layout.
  • Planting holes Count and spacing for your plant density.

Manufacturing

We are a manufacturer, not a trader

Blending, compression, filling and packing happen at our own facility in Peravurani, Thanjavur district, Tamil Nadu. Visitors are welcome.

Inside our factory

cucumber-factory-proof.webp Reserved for genuine CocoSeller factory photography.

Staging Genuine CocoSeller factory photograph required.

Keep reading

Related technical and product information

Specification and process

Our products

Other crops we supply

Questions

Cucumber substrate questions growers ask

We are a manufacturer. Blending, compression, filling and packing happen at our own facility in Peravurani, Thanjavur district, Tamil Nadu. Visitors are welcome.

A 50:50 cocopeat to chip blend at 21% air-filled porosity and 5.66 L per kg is our usual recommendation. It gives the drainage a high-frequency fertigation programme needs while keeping a real water buffer.

Cucumber transpires heavily and is generally less forgiving of a slab that holds water at the base. Growers moving from a very retentive medium often find they need more air, not more buffer.

Yes. Compressed and expanded dimensions, planting hole count and spacing, and drainage hole position and diameter are all made to order.

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.

Our standard product is unbuffered, washed with water alone to below 0.5 mS/cm with no chemical treatment. Calcium buffering is a separate chemical process available on request. Tell us your fertigation approach and we will advise.

Build your cucumber substrate around your growing system.

Tell us your gutter spacing, plant density and irrigation frequency, and we will propose a specification.

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