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Manure Monotub Mushroom Bulk Substrate with Gypsum

$35.00$280.00 inc. GST


Our 2 kg pre-sterilized, ready-to-use Manure Mushroom Bulk Substrate is ideal for your monotub cultivation. Designed specifically for poop or dung-loving mushrooms, this substrate is hydrated to field capacity, ensuring optimal moisture content for mushroom growth. This substrate can be used with white button mushrooms but will require a pasteurized casing layer.

Manure substrate is an advanced option typically used by experienced growers. It is not recommended for first-time growers as it is highly nutritious, making it susceptible to various types of growth. Even though the substrate is sterile, a high grain ratio (minimum 40%) is recommended to facilitate quick colonization and reduce the chances of contamination. Millet is an excellent grain choice for manure substrate due to its slightly lower nutrition and more inoculation points than rye. For instance, 1 kg of rye might have 3000 kernels, whereas millet, being smaller, might have 8000 kernels in a kg. This higher number of inoculation points in millet allows for a more even spread and faster colonization.

Why Manure Substrate?
Manure is highly nutritious and is often considered the gold standard among monotube substrates. Its rich nutritional content makes it a superb choice for mushroom cultivation.

Source and Quality of Manure
We source our manure directly from a trusted farm in New South Wales. The manure, primarily horse manure and occasionally cow manure (based on availability), is aged for over a year. This aging process is critical in preparing the manure for use as a substrate, ensuring it contains the right balance of nutrients for optimal mushroom growth.

Composition of the Substrate
The ingredients of our Manure Substrate include sterilized manure, coco coir, vermiculite, and gypsum. This blend creates a balanced environment for mushrooms, providing them with the necessary nutrients and moisture retention capabilities. The addition of coco coir and vermiculite aids in maintaining the substrate’s structure and moisture levels, while gypsum contributes to aeration and adds essential minerals.

Check our Store to find other Mushroom Substrates.

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  1. Take the bags out of their packaging as soon as possible, and keep them at room temperature, away from direct cold/heat sources.
  2. Do not store uncolonized bags in the fridge; only fully colonized bags can be kept to slow down the fungus and delay fruiting until ready.
  3. We recommend that the bags are colonized as soon as possible to minimize the chances of contamination or moisture loss.
  4. Work in front of a flow hood or a still air box or in a room with no air movement with the workspace adequately sanitized.
  5. Mix at least 15% grain spawn or higher of your desired species, mix it thoroughly in the bag, and let it colonize.
  6. Incubate at 22-24°C in a dark spot and keep all the bags at a distance from each other to avoid excess heat.
  7. Temperatures lower than 20°C make mycelium grow slowly, which could allow competing organisms to flourish. Temperatures above 24°C favor competing organisms rather than fungi, which increases the likelihood of contamination. Temperatures around 32-34°C will kill the mycelium.
  8. Prioritise airflow over, keeping the bag in a dark spot. If there is no air current during colonization, the CO2 buildup inside the bag will not be able to be expelled out of the air filter patch. Excess CO2 buildup will suffocate mycelium, leading to slow growth and mycelium producing excess metabolite as a sign of stress, which changes the pH of the substrate and makes it easier for contamination to thrive.

Shipping Cost – The product is shipped via Australia Post using Express Post service for free. If multiple items are in the cart with varying shipping costs, only the highest shipping cost for a product in the cart will be charged.

Handling time- This product has 0 – 3 days handling time. However, it’s important to note that if other items are in your cart, the handling time may vary based on the handling time associated with those additional items. Handling time is not guaranteed during the busy holiday period.

Shipping time- Australia Post guarantees express post is delivered the next day in metro regions of Capital cities, but give it anywhere from 1-3 days for this package to reach you. Shipping times are not guaranteed during the busy holiday period.


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