Growing media - substrates

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Biobizz Light Mix 20 L

Biobizz Light Mix

Price €7.25
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BioBizz All Mix 20L

BioBizz All Mix

Price €10.25
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Top Coco 50 liter sack

Top Coco 50L

Price €12.50
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Peat Jiffy Box

24mm Peat Jiffy Box

Price €109.00
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Eazy Plug Tray - 77 Plugs

Eazy Plug Tray

Price €10.94
Regular price €12.15
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  • -10%
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Peat Foam - Cilinder format

Peat Foam

Price €14.00
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Worm Humus

Worm Humus

Price €3.50
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Rockwool cubes for cuttings

Rockwool cubes for cuttings

Price €0.15
Regular price €0.17
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  • -10%
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Rockwool Plug Tray

Rockwool Plug Tray

Price €10.00
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Top Vulcan bottles

Top Vulcan

Price €5.76
Regular price €7.20
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  • -20%
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Superguano Bottle

SuperGuano

Price €6.80
Regular price €8.50
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White Perlite

White Perlite

Price €3.10
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Root Riot Clonex Starter Plugs

Root Riot Clonex Starter Plugs

Price €16.34
Regular price €18.15
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  • -10%
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Coco Bricks

Coco Bricks

Price €1.80
Regular price €2.00
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Canna Coco Slabs

Canna Coco Slabs

Price €7.25
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Rockwool Slabs

Rockwool Slabs

Price €5.50
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Black Worm Composter

Worm Composter

Price €135.00
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Sack of Coco Atami substrate

Coco

Price €15.20
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Biobizz Pre-Mix

Biobizz Pre-Mix

Price €14.85
Regular price €16.50
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50 liter Plagron Bat Mix sack

Plagron Bat Mix 50L

Price €22.50
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Mega Worm bucket

Mega Worm

Price €4.07
Regular price €5.09
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Supermix Bucket

Supermix

Price €6.63
Regular price €8.29
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Plagron Calcium Kick Bucket

Calcium Kick

Price €14.52
Regular price €18.15
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Bat Guano

Bat Guano

Price €10.60
Regular price €13.25
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Light Mix Plagron Sack

Light Mix Plagron

Price €15.00
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Root It Plugs

Root It Plugs

Price €14.85
Regular price €16.50
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Growing media - substrates

Growing media - substrates

The use of substrates for the use of marijuana is the most common practice by growers around the world, although this growing medium offers excellent planting conditions and is easy to use, it is necessary to have a minimum of knowledge in this area. However, if you keep reading, you will learn to maximise these said substrates.

In addition we have developed for you this particular product section, in which we have added every substrate and solid fertilizers that we work with in GB The Green Brand. This way we ease your selection process, without having to look everywhere.

The importance of substrates

The substrate is a material that we use for the grow of different types of plants, which people normally don't pay a lot of attention to as we see it as a clump of soil where we are going to plant. But the substrate is more than that, in fact it is the main factor a plants growth can root, develop, feed and improve its structure. Allowing it to be able to flower and be pollinated, to produce bigger flowered branches or to maintain its descendance active.

Properties and characteristics of substrates

So that a substrate is high quality and can be used in cannabis grow, it has to have a certain physical and chemical condition, which comes from a mix of different materials. This fact makes things a bit hard when choosing which substrate we want to use when growing, as there are many marijuana substrates with variations in their components. Therefore, we should know which properties it should contain.

The physical properties it should have is an elevated capacity to retain water and aeration (porosity), certain spongness and a low compaction capacity.

Its chemical properties should have a low-medium cation exchange capacity, a certain amount of nutrients (absorbable) and capable that pH levels don't range a lot with pH levels between 5.5 and 7.0.

These are some of the properties that substrates should have explained easily, as specific values are needed for its bulk density, true density, pore space, water absorption capacity, aeration, water available, reserve water, low availability water and the cation exchange (CEC)

Generally most of our substrates for cannabis plants we offer meet these minimum requirements. This means that you can grow cannabis seeds with any brand and obtain good results, although depending on the conditions of your grow, station of the year and the ways you use to grow, you can choose different substrates.

Types of substrates

The different types of substrates with which we can work with are classified following different criterias, although normally in cannabis grow we differentiate them by inert and active, and by its organic or chemical composition.

The inert substances are those that need a continuous supply of nutrients because they don't contain any as well as a low mineral retention level. Active substrates are those that have nutrient solution and have the capacity to liberate them continuously thanks to their decomposition.

Inert Substrates

  • Expanded clay
  • Rockwool
  • Perlite

Active Substrates

  • Blond Peat
  • Black Peat
  • Vermiculite

Substrates for outdoor growing

When buying substrates for your outdoor mairjuana grow, either in a plant pot or the ground, as well as environmental influences that have to be taken into account when choosing one kind or another, you have to value the large variety and quality of the products. We will remark 3 different types, one for humid and rainy zones, one for more or less stable zones and one for zones where high temperatures are frequent.

A good substrate for zones where rains are frequent you need an aired structure with medium-low water retention properties. With these characteristics it prevents that the soil forms water puddles on the surface for a few days, so the roots don’t suffocate and fungus does not appear. We recommend Canna Terra Professional.

When we have a more stable climate, ideally you should use a substrate that offers medium-high water retention properties, but at the same time it allows progressive aeration, which accelerates the substrates drying in case of rain and allows it to stay damp on sunny days. If this is your case we recommend BioBizz Light Mix.

In the case of growing in lower levels of precipitation, ideally it is worth working with a substrate that has a high level of water retention and allows low aeration, as you want to avoid the substrate drying out fast. We recommend Plagron All Mix.

What is the best indoor substrate

When selecting the best substrate for your plants to grow, you have to take into account the climatology, as well as the own characteristics your room or growing tent has. You also have to take into account the intensity in which you are going to add and the strains you are planting. To help you out, we will add a few indoor substrates to help out your grow.

A good substrate for your indoor grow, as well as the ones listed above, Top Crop Complete Mix is a good one. Thanks to its characteristics and components it can be used stressfully under any type of environment, although it can suffer a bit when environmental humidity is low.  It can be solved by maintaining humidity levels inside recommended parameters for indoor grows.

Another option for indoor grows is Janeco Light Mix by Atami, which contains an envious texture, it retains slightly more humidity than the Complete Mix by Top Crop. Which means we can use Jance Light Mix by Atami for zones where exterior temperatures are high and the humidity is low. and the Complete Mix for zones where humidity is high and temperature is low.

What else can you add to your grows

Coco coir :  These 33mm Coco Coir Jiffy pellets are some of the most used methods to germinate seeds and root clones when it comes to growing cannabis – from experts to beginners. Lots of people successfully use this method, although some may get confused and make silly mistakes when using starter plugs.

Clay Pebbles : Clay Pebbles are used in various different types of growing, especially when it comes to growing cannabis.

Improve substrate drainage

It can be used at the bottom of your flower pots to help drain out more water from your plants’ substrate, making sure that the water doesn’t pool at the bottom of the pot which can cause some real issues with your plants’ roots. You can also place some clay pebbles at the bottom of your cutting propagator to reduce humidity.

Hydroponic Substrate

They can also be used in hydroponics, filling your mesh puts with clay pebbles and planting your seeds or cuttings in rockwool cubes. You can reuse clay pebbles as much as you want as long as you clean them of any residues. If you’re growing with new clay you will need to balance its pH to 5.5 overnight before planting – it’s an annoying process, although once done you won’t ever have to do it again.

Worm Hummus: Worm Humus is a solid fertilizer that can give any plant an amazing growth boost; their leaves will turn an intense green color and their stems and branches will become super thick and strong thanks to this organic product. It contains worm humus, which gives your plants plenty of macro and micro nutrients, plenty of good bacteria and humic/fulvic acids.

When Should you Use Worm Hummus?

This fertilizer is designed for your plants growth period and their important pre-flowering period, which is when they tend to shoot up before flowering. It’ll help your plants to produce stronger, larger roots, giving them a decent dose of nitrogen that’ll have them growing like never.

Where Should You Use Worm Hummus?

Worm Humus is used for growing all sorts of plants – practically any fruit and veg can be grown using worm humus thanks to the fact that it’s organic and it leaves no residues on your plants, meaning that you can consume the final product safely; 100% organic and eco-friendly. It can be used when recycling substrates, mixing in up to 20-30% worm humus. It’ll give your soil back its spark, allowing you to grow using the same soil twice, although we don’t recommend this when growing indoors if you’re looking for the best results; it is reused soil, after all.