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. 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.
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.
A 50:50 cocopeat-to-chip blend, at 21% air-filled porosity and 5.66 L/kg water holding capacity, is our usual recommendation for greenhouse cucumber. It gives the drainage a high-frequency fertigation programme needs while retaining a real water buffer.
An 80:20 blend, at 10.2% air-filled porosity and 6.73 L/kg, suits cooler climates, shorter cycles, or systems with fewer irrigation events per day where the extra buffer is worth having.
A 20:80 blend, at 25.06% air-filled porosity, is 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.
Blend ratio, compressed and expanded dimensions, planting hole count and spacing, drainage hole position and diameter, EC level, buffering, film and print are all produced to order.
Full specification for all five blend ratios is on the coco grow bags page. Our batch testing and reporting is described on the quality page.
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.
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.
Other crops we supply: Tomato · Strawberry · Capsicum & bell pepper · Blueberry
Our products: Coco grow bags · 5 kg blocks · Coco chips · 600 g bricks · Open-top bags · Coir fibre
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.
Tell us your gutter spacing, plant density and irrigation frequency, and we will propose a specification.
Tell us your crop, growing system and volume, and we will propose a specification rather than send a brochure.
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