Coconut Substrate for Cannabis Growing

The "Formula 1" of Growing Media: Speed and Control

If you feel like you've hit a ceiling with traditional soil and want to push the accelerator, you've come to the right place. Growing in coconut substrate is the natural step for those looking for faster growth and much more abundant flowering without complicating their lives with complex hydroponic systems. Think of coco as the perfect hybrid: it has the texture of soil but the performance of hydro.

When you switch to this medium, you notice the difference in the first few weeks. The roots don't just grow; they fly. Thanks to its incredible aeration capacity, your plants can eat and drink much more frequently. And you know what that means: bigger plants in less time. It's not magic, it's oxygen. If you are used to Universal Substrate, you will be amazed at how quickly the pot dries out here—and that's a good sign! It means your ladies are metabolizing nutrients at full speed.

Bricks, Slabs, or Bags: What Will You Find Here?

We know that every grower has their own setup and space, so we have curated a selection that adapts to your lifestyle. Here you don't just buy "dirt"; you buy the base of your success.

• Compressed Bricks: Ideal if you want discretion and ease of transport. You buy a small block, hydrate it, and boom, you have liters of high-quality medium ready to use.
• Loose Bags (50L): For those who don't want to mess around. Open, pour into your pots, and start growing. We work with top brands like Canna, Plagron, or Biobizz, ensuring that the coco is washed and buffered (free of salts and with stable pH).
• Slabs: The professional format par excellence. Perfect for tray crops and automatic irrigation systems.
• Mixes with Perlite: Many of our substrates already come mixed with perlite to maximize drainage and oxygenation even further.

Why Your Plants (and You) Will Love Coco

You might be wondering, "Is it really worth changing my routine?" The short answer is yes. The long answer is that coconut substrate gives you total control. Being an inert medium, it contains no nutrients. This might sound like a hassle, but it's actually your biggest advantage: you decide exactly what your plants eat, without interference.

Because the substrate is so airy, it is very difficult to drown the roots (the number one mistake of rookie growers). This allows you to water with fertilizers more often, creating a constant feeding cycle that triggers explosive development. Plus, it's a sustainable and ecological product, made from the waste of the coconut industry. You are literally turning waste into green gold.

Pro Tips for a Master Harvest

Growing in coco is easy, but it has its rules. Since the medium doesn't hold nutrients like soil does, you can't fall asleep at the wheel. Here are the keys to not failing:

• Control the pH: This is non-negotiable. In coco, the pH should be slightly more acidic than in soil (between 5.5 and 6.2). A good PH calibration solution is your best friend to keep your meters on point.
• Don't forget the CalMag: Coco tends to "sequester" Calcium and Magnesium. To avoid deficiencies, make sure to add a CalMag supplement to your nutrient mix.
• Root Power: Although coco naturally stimulates roots, if you add a Root stimulator in the first few weeks, you will create a root ball capable of absorbing anything you throw at it.
• Keep it moist: Unlike soil, coco should never dry out completely. The key is frequent but controlled watering.

Frequently Asked Questions About Coconut Substrate

Do I need specific fertilizers for coco?

Yes, it is highly recommended. Although you can use hydroponic fertilizers, the specific ranges for coco (A+B) are formulated to compensate for the natural interactions of the substrate, such as the demand for Calcium. If you already have a Hydroponic Grow Kit, check if your nutrients are compatible.

Do I need to buffer the coco bricks?

Most of the bricks and bags we sell at Pevgrow come washed and buffered, ready to use. However, if you buy very cheap or generic coco blocks, you might need to buffer them with Calcium and Magnesium to remove excess salts. Check the product description to be sure.

Can I reuse the coconut substrate?

Yes! That's another great advantage. You can reuse it 2 or 3 times if you treat it with enzymes to break down the old dead roots. Just make sure it hasn't had pests or fungi.

Is it better to water by hand or with automatic irrigation?

Coco shines with automatic irrigation (drippers) because it allows for many small waterings a day (high frequency fertigation). However, watering by hand works perfectly fine, you just have to be more consistent than with soil.