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starting marijuana seeds in coco coir

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Coco coir unlike most soils for cannabis cultivation is unfertilsed. This is where hydro growers get to transfer their skill set. A light nutrient solution must be applied just like in a hydro crop from the beginning. The pH of your water will have to be adjusted to ensure you stay at the sweet spot for coco coir, namely a pH value of 6.0. In order to accurately keep the pH and nutrient solution dialled in, you have two options.

Jiffy pellets are made from coco coir. Jiffys have been popular rooting mediums with growers for decades. Cuttings and seedlings once rooted can be transplanted into virtually any other substrate. Alternatively, you can use 1l starter pots filled with coco coir mixed with 30-50% perlite and transplant to larger containers of your preferred substrate later.

If you have coco coir in brick form, make sure to purchase a high-quality brand. Every brick will be relatively uniform. When you add 4-5l of water and leave it to soak for about 30 minutes, a consistent 9-10l of medium will be produced from each brick. Simply add perlite and mix by hand in a good-sized bucket.


Watering and feeding cannabis plants cultivated in coco coir is a relatively simple transition for hydroponics growers and organic growers. Generally, hydroponic fertilisers perform better than most brands’ organic soil nutrients in coco coir. Specifically, coco specific nutrient ranges are worthy of consideration.

In the last few years, most soil growers have begun blending coco coir into their own homemade super soils. Even the manufacturers of most common grow shop soils recommend buffering the substrate with coco coir these days. Coco coir drains better and keeps the roots oxygenated more than standard peat-based mediums. So you already have experience cropping in soil. Why not dabble with a soil and coco coir mix before making the switch?

Peat moss also makes a useful soil amendment. Also known as Sphagnum, peat moss is a genus of around 380 separate species of mosses. Peat moss works to acidify its environment by uptaking cations like magnesium and calcium, and in turn releasing hydrogen ions. By outputting hydrogen, peat moss slowly builds bog-like conditions that can reach deep into the ground. In nature, the mosses eventually form a peat bog.

Growing cannabis in soil alone offers good results, but soil amendments such as peat moss and coco coir can make good results great. They add structure, hold water, improve acidity, and boost microbial life.

Regardless of the medium they’re grown in, all cannabis plants need nutrients. When growing in coco coir, feeding your plants is crucial. One of the best tips for growing in coco coir is to use the right type and optimal levels of nutrients throughout your plant’s lifecycle.

It’s no wonder that coco has now become one of the most popular mediums for growing weed. Growing weed in coco coir can truly take your grow to another level. Easy to use for beginners and revered by individuals that have been growing for years, using a coco grow medium can improve plant health, boost plant size and increase overall yields. How? Here are all of the benefits of growing cannabis in coco.

Over the past few years, coco coir has become an increasingly popular growing medium among beginner and expert cannabis growers alike. Why is growing weed in coco so prevalent in the cannabis cultivation scene? It’s simple. Growing cannabis in coco can make a good grow even better when done right, offering both healthier plants and higher yields. If you’re interested in learning all there is to know about coco coir, this article will get you started.

How To Properly Rehydrate Coco Coir

Growing in coconut fiber is quickly becoming one of the most popular mediums for cannabis growers interested in cultivating good crops and maximizing their harvest. It can be used for both indoor and outdoor grows, and with a pH level of 6.5-7, it’s extremely similar to soil that hasn’t been fertilized.

When using a coco grow medium, keep in mind that if you’re using coco on its own, plants will need to be consistently fed fertilizer throughout their lifecycle, as they aren’t receiving any nutrients from the soil.

If you’re growing in coco, you should always use nutrients designed specifically for this medium (such as Advanced Nutrition Plagron Cocos A & B fertilizer) or nutrients designed to be used in hydroponic setups.

Because growing cannabis in coco requires nutrients, it can be easy to overfeed your plants. To avoid nutrient buildup, consider giving plants plain water every other watering. Also keep in mind that water should always be adjusted to a pH of 5.5-6.5 before it’s given to plants.