Besgrow Coir is a high quality, versatile media produced from the husks of coconuts. Coir is ideal for growing hydroponic vegetable and flower crops, enhancing your potting mixes or providing natural solutions for your landscaping needs.
Besgrow has become a market leader in the supply of high quality Coir throughout New Zealand and it is widely used by commercial greenhouse growers in the hydroponic production of crops.
A number of leading potting mix manufactures add to coir to enrich their media. Also the use of coir textiles for weed suppression and erosion control is a popular choice in the landscaping industry.
With comprehensive quality control systems in place during processing at our facility in Sri Lanka, you can be confident that Besgrow will provide you with consistent, high quality coir.
All Besgrow Coir products are produced from sustainable and renewable resources. The well planned cultivation and maintenance of Sri Lanka’s coconut plantations ensures the future sustainability of the Besgrow Coir products.
Our key Coir products are available in either Bulk (large compressed bales) or Gropac (purpose made UV-treated plastic wrapped compressed slabs) options- as indicated below.
Precision is produced from coir pith and has been screened to remove the longer fibres. Precision is the finest of our range and is ideal for propagation, seedlings and cell tray applications.
Classic is produced from coir pith which has been screened leaving some longer fibres to increase the air in the substrate. Classic is ideal for growing many vegetable crops or as an additive to potting mixes.
Power is produced from 70% Profit and 30% Classic, giving you the benefits of additional air and water holding capacity. Power is ideal for sensitive crops which require good aeration, perfect for roses and vegetable crops.
Profit is produced from the complete coconut husk which is cut into a medium size chip, crushed and then buffered to give the grower a very stable, ready to use substrate for vegetable and ornamental plants for example gerberas. As Profit has been buffered, the run-off discolouration is minimal.
Crush is produced from the complete coconut husk which is cut into a medium size chip and crushed. Crush can be used for most hydroponic crops because of the uniformity of chip size, which allows for better water management and steer ability of crops, particularly in the winter months.
Besgrow Coir comes from our processing facility in Sri Lanka
Is Besgrow Coir a natural product?
Besgrow Coir is processed from 100% organic product, processed in an environmentally and socially responsible manner.
Which part of the coconut is used to produce Besgrow Coir?
Besgrow Coir grades are produced from the pith and fibres of the coconut husk.
Using an age old process the pith is extracted from the husk, creating a material with only minimal amount of fibres. This is used to create our finer grades, Precision and Classic. The long fibres are then used to create our textile products, Weed Mat and Erosion Control.
Coarser grades are produced from the whole husk that is chopped and crushed to form large chips. This material is used for our grades, Profit and Crush.
How do you achieve a consistent high quality product?
We have a team of Quality Controllers who carry out the following procedures throughout production:
- Ensure only selected husks are used
- Test the coarseness of raw materials by sieve analyses
- Record and analyse the pH and EC regularly during the washing and/or buffering
- Check the moisture content of the coir before compression
- Ensure each Gro Bag or bale has the same quantity of coir
- Test each batch after compression for its expansion.
Is it expensive to add Besgrow Coir to a potting mix?
It will increase the cost of your mix slightly, but remember you are only adding a small percentage to achieve significant benefits.
I have heard coir can be high in salts.
Coconuts are a fruit and therefore naturally high in sodium and potassium. Besgrow has a range of products with different EC levels which can be recommended to you dependent on the type of plant you are growing.
I have been told Crush Coir is a generative growing substrate.
This is true due to a high air holding capacity, Crush coir gives you excellent drainage which allows you to steer your crop easily.
What is the life span of coir?
Trials have shown that coir will retain its structure and not break down for the duration of the plants growth cycle. In fact, the Profit and Crush materials have been used for several years by a grower without replacing Gro Bags.
Can the Gro Bags be pre-cut with holes?
Yes, we can pre-cut the Gro Bags at the production factory with plant holes, drain slits and a small hole drilled in the coir for your dripper. This makes installation of the Gro Bags very easy and quick.
Does the price per Gro Bag increase if I want plant holes, drain slits, and drill holes for irrigation spikes?
No, this is a service we provide free of charge when a customer makes an order. Please contact us to find out about minimum order requirements.
How do I measure the moisture content in my Gro Bags?
The most effective way is using electronic weigh scales, preferably connected to your computer. This has proven to be a very valuable tool for your water management. It is particularly useful to determine when to start and stop your watering for overnight dry-down.
What is the water holding capacity of coir?
Classic – 8 litres/kg of dry material
Profit – 6 litres/kg of dry material
Will finer material such as Classic mean less drainage?
Yes, however it still provides a good amount of drainage. The air:water ratio for Classic is 20:80 in comparison to Profit with 30:70.
Can you run a trial of Besgrow Coir alongside other media without changing the water schedule?
Yes, as long as your substrate volumes per plant are the same.
What happens to the old roots if the Gro Bag is used for a second season?
If the plants are cut off in a healthy condition without diseases, then the roots do not cause any problems. The open airy structure of the substrate will be maintained and the old roots will increase the organic matter in the Gro Bag.
Why are a majority of my plant roots rotten?
Coir has a high water holding capacity; if the substrate remains too wet for too long with some plant types the roots will suffer and begin to rot. Allow coir to dry out sufficiently before irrigating again or use a coarser grade of coir. Check EC to ensure this does not increase too much.
Why are the tips of the plant roots brown?
The EC of the coir is too high; flush with straight water until your EC reaches a satisfactory level.
Why are the tips of my cymbidium leaves white?
This is most likely a magnesium deficiency often caused by slightly too higher EC. Too much potassium and sodium can prevent the calcium and magnesium from taking up exchange sites and being available to the plant. Check pH and EC Apply dolomite (CaMg), or a magnesium fertiliser.
My leaves are mottled (or interveinal chlorosis) on my plant?
This could be a range of things but in coir it is likely to be iron deficiency due to a pH which is too high. Check pH and EC and lower pH if required.
What is the green stuff growing on the top of my pot?
This is probably algae. This will occur in pots which are kept wet for prolonged periods of time. Remember to allow pots to dry out sufficiently between irrigations.
Do you provide technical support?
Our technology partners in Holland and France provide advice and expertise to growers when required throughout the season. We strive to provide excellent customer service and support.
Yes, coir is a great additive to potting soils as it tends to bind the mix giving consistency with your drainage and water holding.
I have heard mixing coir into potting mixes gives better root and foliage development.
Yes coir is great in a potting mix as it increases water holding and aeration in the mix.Coir holds on to the fertilizer to make available for the plant.
Can I mix bark and coir together as a mix?
Yes you can, although it depends on what plant type to what grades you should use. Coarse bark products such as Orchiata have the ability to last a good deal of time in the pot. Once you add a wetter medium to it e.g. coir or sphagnum moss this changes the bark substrate ability to last as long. This is fine but you must remember to check the substrate regularly and do not over water. Replace if the bark is beginning to break down.
Can you put the coir Gro Bags straight onto the floor?
The coir must not sit in any runoff where it could take the moisture back into the Gro Bag. Most growers have plastic sheeting with polystyrene slabs under the Gro Bags to slightly raise them for optimal runoff. With the water distribution being very homogeneous throughout the Gro Bag, you do not need flat floors. Ensure the drainage slits are cut at the lowest point in the Gro Bag.
What is the easiest way to hydrate Coir?
Bulk – For maximum yield of a bale of coir immerse the bales in water at a rate of 8 litres per kilo. This will hydrate in a very short time, however, allow time for the bale to completely absorb the water. Once hydrated drain off the surplus water.Gro Bag – Lay out the plastic floor covering and position Gro Bags as desired. Poke dripper through plastic to hydrate the coir slab with recommended solution. Once hydrated, cut holes for plants and drainage slits. To allow plenty of drainage make vertical cuts (2-3cm) on each side of the slab by running the knife up from the base. Place your cube/bottomless pot with plant on top of slab. Place dripper into the cube/ bottomless pot.REMEMBER:Never let Gro Bags sit in water as they act like a sponge and will take the water back into the slab.Make sure if your Gro Bag is on an angle that the drainage slits are cut at the lowest point, preferably not under the plants or where the dripper enters the slab. The best way to measure water content is by using up a weigh scale. Gro Bags must lose at least 1kg of weight per night before commencing your water schedule the next day
Do you need to sterilise or steam the Gro Bag if using for a second season?
No, you do not need to steam the coir. Trichoderma occurs naturally in this substrate and the environment does not encourage root diseases.