Barley Malt Extract
No Stock
Barley Malt Extract

Barley Malt Extract is combined with Agar Agar and yeast, sterilized and used to make agar plates which allows you to save and propagate cultures

R39.00R79.00 Select options
Basalt Rock Dust
Basalt Rock Dust

Basalt Rock Dust is made of the volcanic rock called basalt and is specifically used in the cultivation process of the Medicinal Mushroom – Cordyceps Militaris.

Basalt Rock is an excellent source for calcium, magnesium, iron, manganese, silicon, cobalt, zinc, boron, and Aluminium.

300g

R40.00 Add to basket
bran flour
Bran Flour

Wheat bran flour is commonly used as an ingredient in substrates of wood-loving mushroom species. It is very nutritious and needs to be sterilised when added to fruiting blocks.

Generally bran is added as 30% of the total fruiting block.

R19.00R35.00 Select options
Brown Rice Flour
Brown Rice Flour

The product of powdering brown rice is a popular substrate for growing mushrooms. Its use as a substrate was made popular by the use of cake spawns in the PF Tek method of growing. It is most often powdered into a flour and combined with vermiculite.

500g

R49.00 Add to basket
Coco Coir
Coco Coir

Coir is a commercially available mix of ground up coconut husk and shells. Coir is one of the best bulk mediums to grow mushrooms in. It’s naturally resistant to mold and bacteria and mushrooms absolutely love it. When wet it expands to over 2.5 cubic feet.

R49.00R169.00 Select options
Cow Manure
Cow Manure

Cow manure is an excellent substrate that can be used simply as an added nutrient to straw, grain and other substrate mixtures. Dried and crumbled for your convenience.

R59.00R99.00 Select options
gypsum
Gypsum

Powdered gypsum is used to increase the pH in mushroom growing substrates such as coco choir, sawdust, coffee grounds and straw. It is a yield enhancer as it supplies minerals and trace elements to the mycelium.

It is also used when preparing grain spawn to stop the grain from clumping together.

Gypsum should be mixed at a rate of 2.5% of the dry weight of the bulk substrate and 1 tablespoon per litre of grain spawn.

500g

R49.00 Add to basket
Hardwood Sawdust
Hardwood Sawdust

Hardwood sawdust is used to grow wood loving mushrooms such as Shitake, King Oyster, Wine Cap, Chicken of the woods, Turkey Tail, Lions Mane, Maitake and Reishi mushrooms.

Our hardwood sawdust is from meranti.
Paul Stamets Sawdust Recipe:
73 % Hardwood Sawdust
24.6 % Bran
2.4 % Gypsum
65% water added to the above mix.This mixture is added to a mushroom grow bag and steralized at 15psi for at least 2 hours ( depending on the size and amount of bags being steralized.Once cooled grain spawn is added, the bag is sealed for sterile colonization.
R29.00R49.00 Select options
Horse Manure
Horse Manure

Horse manure is an excellent substrate that can be used simply as an added nutrient to straw, grain and other substrate mixtures. Dried and crumbled for your convenience.

R59.00R99.00 Select options
Hydrated Lime
Hydrated Lime

Cold Water Lime Pasteurization, is a cheap and effective low-tech way to prepare substrates for growing mushrooms.

This type of substrate treatment is easy for most people to do at home.

It’s even used by some small-scale commercial mushroom growing operations that want a low-tech, cheap and effective way to pasteurize straw.

The overall process is very similar to growing mushrooms on straw with heat pasteurization, the only difference is to replace heat with lime.

This process is mainly used to treat straw for growing Oyster mushrooms.

Use 20 grams of hydrated lime per 10 liter s of water.

Simply add the appropriate amount of lime to cold water, mix and add your straw. Leave the straw to soak for 24 hours and it is ready to be drained and inoculated.

500g

R40.00 Add to basket
Perlite
Perlite

Used for creating and maintaining humidity in growing chambers.

R49.00R79.00 Select options
Popcorn
Popcorn

Popcorn is used for grain spawn, easy to prepare and good grain to begin with.

R85.00R135.00 Select options
sorghum
Red Sorghum

Red Sorghum is a great grain to make grain spawn with. It hold moisture well without being damp on the outside.

R85.00R135.00 Select options
Rye
Rye

Rye Grain is one of the most popular materials for growing mycelium before inoculation to bulk substrate. Most commonly used for making grain spawn.

R99.00R149.00 Select options
Soy Hulls
No Stock
Soy Hulls

Soy Hull are a key ingredient in the  masters mix substrate pioneered by TR Davis of Earth Angel Mushrooms. Masters mix substrate colonises fast and has high yields, it encourages a larger than average first flush allowing for quick turnover. Masters mix is heavily supplemented and will require sterilisation.

To make masters’ mix you will need an equal weight of soy hulls and hardwood sawdust. This is to be hydrated to 60%. Use the following recipe to produce 2.3 kg of substrate which is inoculated with 200 grams of grain spawn.

  • 450 grams soy hulls
  • 450 hardwood sawdust
  • 1.4 litres water
  • Mix together and sterilize for 2h30.
R85.00R135.00 Select options
Sale!
Sphagnum Peat Moss
Sphagnum Peat Moss

If you’ve ever seen pictures of a button-mushroom farm, you might be asking yourself … why does it look like all the mushrooms are growing out of the soil? Aren’t mushrooms supposed to grow from a substrate, different from the way that plants grow?

Many moons ago, button mushroom growers discovered that adding a layer of organic material on top of the compost could have a huge impact on yield. This layer of “soil” on top of the mushroom beds is referred to as a “casing layer” and has a number of important benefits.

In fact, some mushrooms won’t fruit at all without the application of a casing.

What is a casing layer?

In basic terms, a casing layer is a layer of moist material – either organic, inorganic, or a combination of the two – placed on top of a colonized substrate prior to fruiting. The main function of the casing layer is to aid with moisture retention in the substrate. Some casings also contain biological components, microorganisms that are necessary for fruitbody formation in some species.

Benefits of A Casing Layer

Colonized substrates exposed to the environment have a tendency to dry out rapidly if the humidity falls below a certain threshold. Even small fluctuations in humidity can prevent a fruiting block from achieving a full and even pinset.

A casing layer is able to provide a consistently humid environment at the interface of the substrate and the environment (where pins form), which can often make up for less than ideal environmental conditions. Once the mushrooms pin completely- and start to develop into more defined fruitbodies that protrude through the casing- they are less susceptible to fluctuations in humidity.

A a good casing is one that is excellent at holding moisture and slow to contaminate.

Downfalls of A Casing Layer

Casing layers do involve an extra step in the growing process, which means more time and resources to get the job done. Since not all mushrooms really benefit from a casing layer, using one can sometimes be counterproductive.

They can also be susceptible to contamination, especially in fruiting environments with limited amounts of fresh air. Typically, casing layers used for moisture retention should be either pasteurized or treated with hydrated lime in order to ward off contamination.

For certain species, such as Wine Caps (Stropharia rugosoannulata) the casing layer should only be lightly pasteurized- in order to retain the beneficial bacteria that is necessary to initiate fruiting.

Eventually, any casing layer will contaminate if it remains moist for long enough – but the grower should be able to get a number of flushes before this happens in most situations.

Types of Casing Layers for Home Growers

Many different materials can be used for a casing layer- including garden soil, sphagnum moss, coco coir- but the most commonly used is material for casing is peat moss. Peat moss is cheap and widely available, and is excellent at retaining moisture.

Another excellent casing material is vermiculite. Vermiculite is an inorganic material typically added to soil to help potted plants retain moisture. It’s also very resistant to contamination, meaning it can be added directly to the top of the substrate without any consideration for sterilization or pasteurization.


Our personal favorite casing layer  is a 50-50 mixture of peat moss and vermiculite, moistened to “field capacity” and pasteurized for 30-40 minutes.

Peat moss is naturally acidic, so growers often add calcium carbonate to the mixture in order to buffer the pH. This helps to mitigate the chances of contaminates flourishing in the moist casing layer. A typical ratio of calcium carbonate would be 2-3% calcium carbonate by wet weight of the casing layer.

R19.00R35.00 Select options
Vermiculite
Vermiculite

A very popular add-on item for any Kits/Jars/Spawn Bags & bulk casing grows! Use during fruiting stage to help cakes absorb additional moisture

R49.00R169.00 Select options