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Best Coco Coir for Cannabis

Last Updated: August 4, 2022
Roy Stevens
Product Review by Roy Stevens

Coco coir is a growing medium more often used by cannabis growers when growing hydroponically. There’s a wide array of benefits your cannabis plants will enjoy and ultimately thrive on when introducing coconut coir to your grow.

In this review of ten of the best coco coir currently available for hydroponic growers, you’ll read about the many different types of coco coir alongside all the pros and cons of each brand.

Let’s jump into the reviews and see what brands made the list!

Our Reviews

CANNA Coco Coir

Canna is recognized as one of the leaders in the soil alternative industry, and the CANNA Coco Coir they sell is recognized as one of their best products.

So what makes it so good? Well, apart from the fact it is super easy to use, it is also specifically engineered to provide a perfect, moist, and oxygenated rooting medium.

Made from the most highly refined and highest quality substrates, CANNA Coco Coir is one of the most premium soil alternatives available today.

With an excellent air to water ratio, that has been developed to retain water for longer periods and allow optimal plant growth in the form of strengthening roots and promoting faster development.

Each batch is intensively pre-washed and thoroughly pre-treated, and buffered to ensure low sodium levels and excellent results.

Environmentally friendly and biodegradable, Canna works hard to ensure that every batch is free of pathogens, pests, and disease, and this makes CANNA Coco Coir perfect for re-circulating or run-to-waste systems.

The CANNA Coco Coir also contains Trichoderma – a friendly strain of fungus that actually helps protect roots from root-rot.

Available at a comparatively excellent price, the premium level of benefits available with this media is very good when compared to other soil alternatives.

Versatile, effective, and diligently developed, this media is also able to be reused multiple times, thus saving you even more money.


  • Environmentally friendly
  • Intensively pre-washed
  • Pathogen free


  • Expensive for the amount
  • None discreet packaging

Sakti Agro Triple Washed Coco Coir

Sakti Agro Triple Washed Coco Coir is an all-natural, one hundred percent sustainable and renewable, premium-grade growing medium sourced in luxuriously abundant Sri Lanka.

Incredibly easy to use and capable of being distributed directly from the bag, this Coco Coir is lighter than normal soil and has a fantastic water to air ratio, perfect for improving growing conditions.

Coco Coir is pre-sterilized and triple washed in clean, fresh water to ensure low sodium content and an impressive EC lower than 0.6.

With a pH level of between 5.5 and 6.5, this premium soil replacement and alternative is suitable for most plants and is also extremely versatile.

Able to be used in everything from potted plants to greenhouses, gardens to flat containers, the super high-quality nutrients are perfect for optimizing growth in cuttings, seedlings, fruits, and vegetables.

Not only is Coco Coir able to be used indoors and outdoors, but it also can act as a sustainable alternative and replacement for peat moss.

Weighing in at just over 14 pounds per bag, Sakti Agro Triple Washed Coco Coir certainly offers excellent value for money, and whilst there are alternatives available in larger quantities, few, if any, boast the nutritional value or versatility of this product.


  • High water holding ability
  • 100% sustainable
  • Alternative to peat


  • None

Urban Worm's Coco Coir

If you are looking for an effective, and easy-to-use soil alternative, then you should definitely consider Urban Worm’s Coco Coir.

One hundred percent natural and organic, every Urban Worm brick weighs just 1.4 pounds and can absorb 1 gallon of water.

Prior to distribution, every Urban Worm brick is also thoroughly inspected to ensure no parasites or disease and then repeatedly rinsed to reduce both EC and sodium levels; in fact, each block contains less than 1.5mS/cm salt content.

This pH-neutral soil amendment and has super impressive water retention abilities, additionally the Urban Worm blend creates a beautiful texture in the soil that many users rave about.

Immensely versatile and able to make a great addition to any soil, the Urban Worm blend acts as a natural, sustainable, pH stable, alternative to peat moss.

Able to expand to .35 cubic feet, this soil amendment can also act as bedding for worms, turtles, and reptiles and is even able to be used in composting toilets.

Available in several different packages but all at various prices, many growers will undoubtedly ask why they didn’t start using Urban Worm’s Coco Coir Soil Amendment and Bedding sooner.


  • Sustainable
  • Versatile
  • Thoroughly cleaned


  • Expensive for the amount
  • Can be difficult to cut

Buyers Guide – Best Coco Coir For Cannabis

For many a year, parts of the coconut plant have been harvested as a food source that has offered many health and nutritional benefits, with the outer shell or “coconut husk” that is regularly thrown away and seen as a waste product with not that many uses.

Over the years we learned that this was not the case, and the husk, when broken down into various forms delivered some great results for the avid gardener.

When you think of coco coir, more often than not, it’s the outer coconut and everything else in-between the shell that is used in the making of coco coir.

Many beginner growers are unaware that there are actually two types of coconut fibers.

Brown Coir Fibers – These types of fibers come from matured coconuts that are considered to be ripe. They’re less flexible than white fibers but much stronger.

White Fibers – White coco fibers are weaker in nature but are much more flexible than their counterparts. They’re produced by pre-ripe coconuts.

The majority of home growers utilize the brown coconut coir within their hydroponic set-ups, this is mainly due to the first stage of harvesting whereby the coir is processed even more.

When looking for the highest quality and best coco coir, try to find out the following –

  1. How is it harvested?
  2. How is it prepared?
  3. How is it processed?
  4. Does the company do everything in its power to negate pathogen growth?
  5. Do they have a robust and methodical system in place to oversee the premature aging of their coconut coir?
  6. Do they utilize repeated wash and rinses to flush their coco coir?
  7. Is their finished blend a balanced mix of chips, fibers, pith?
  8. Is their coco coir stored correctly?


It’s always best to pick a trusted brand that follows the very best practices in the production process. The risk for pathogens in coco coir is fairly high due to the natural pH of the coco coir, and how it is commonly stored by manufacturers.

Because of this, most manufacturers of coco coir will chemically sterilize their coir before it’s sold to the public. This comes with risks to the coir, as the chemicals can quite often break down both peat and fibers. By following our advice, you can be assured you’re only picking the very best coco coir for cannabis.

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