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Coco Coir For Cannabis

Growing Cannabis in Coco Coir

Written by Neal Brown . Updated: March 17, 2021

Using Coco Coir as the Grow Medium for Your Cannabis Crop

Individuals new to growing cannabis may feel overwhelmed, as the process involves more than simply putting the pot seeds into soil. There are several growing methods to choose from, hundreds of strains, and multiple grow mediums. So much to consider!

Let’s start with grow mediums. There’s soil, coco coir, peat moss, hardened expanded clay, rock wool, and more! A popular choice for growers is coco coir. So, what is coco coir, and what are the benefits of using it?

What is Coco Coir?

Otherwise known as cocopeat, coir peat or simply coco, coco coir is made by grinding up coconut seed husks. The resulting substance is a biodegradable and renewable substrate that serves as an effective grow medium. An added benefit of coco coir is its reusability—it can be reused multiple times before being replaced. The general recommendation is to reuse coco coir three times.

In the past, the coconut husk was largely considered useless. Once the coconut seed’s flesh and juice were used, the rest was thrown away. Later, however, people began to see that the husk had many uses in the making of floor mats, brushes and mattresses, and in the making of gardening substrates.

What Makes this Material Ideal for Cannabis?

Billions of coconuts are harvested and processed each year across the globe. This fruit is native to many countries including the Philippines, India, and Sri Lanka. Furthermore, the fiber holding the coconut shell can be used in a wide variety of ways, including to make ropes and insulation. Now, cannabis growers from Alaska to Florida are discovering it can be of benefit to them as well.

When finely ground, coconut seed husk looks, feels, and acts much like soil. To obtain coco coir, the husk (coir) must be removed, soaked, and softened. This process may be done in tidal water. If this is the case, the salt absorbed by the husk will need to be removed. Once soaked and softened, the husk must be dried.

The drying process takes more than a year. Upon completion, the coir is organized into bales. Each bale is chopped and processed into one of three types: pith, fiber, and chips. Knowing the key difference between each type of coco coir is important for weed seed growers interested in the substrate.

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