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Grasping the Concept of Mycelium

Mycelium, the root structure of fungi, acts as the digestive system for mushrooms. It searches for nutrients, converts them into a form that the fungus can intake, thereby nourishing the fungus. The byproduct of this process enriches the surrounding soil, supplying vital nutrients to other plants and producing a nutrient-rich biomass that is excellent for gardening mulch.

Mycelium networks not only contribute to mushroom growth but also play a crucial role in the health and growth of many land plants, including trees. For example, tree roots and fungi participate in a symbiotic exchange where the tree offers the fungus carbon in the form of sugars, and in exchange, the fungus provides the tree with vital minerals such as nitrogen and phosphorus. You can learn more about this relationship here.

Interestingly, mycelium networks function as an underground communication system among plants, mirroring neural networks in our brains. Recent scientific studies indicate that plants and trees might have basic nervous systems that fungi could potentially affect, impacting aspects such as communication, memory, and learning. Furthermore, by consuming decaying organic matter and purifying any present pollutants, mycelium contributes to maintaining soil health.

If you’re keen on cultivating magic mushrooms, grasping the growth of mycelium is essential. While the cultivation process may be daunting for novices, understanding mycelium is a vital first step. While you can always opt to buy mushrooms from Buy Mushrooms Online Canada online, learning about mycelium can enrich your cultivation journey.

The Development Process of Mycelium

When fungal spores find a suitable growth environment, they begin the creation of two types of mycelium. The first kind, referred to as primary or monokaryotic mycelium, is identified by the presence of a single nucleus in each cell. This kind of mycelium usually isn’t visible to the naked eye. The second kind, known as secondary or dikaryotic mycelium, is visible and houses two nuclei in each cell.


When fungal spores germinate, they initiate the formation of the primary mycelium, also known as the monokaryotic mycelium. Upon encountering another compatible monokaryotic mycelium, they can combine to create the second phase, the dikaryotic mycelium. It’s this secondary mycelium that is capable of generating mushrooms or sclerotia.

Mycelium Categories

Mycelia can be classified into three types, with two being indicators of successful cultivation.

  1. Rhizomorphic mycelia extend in a string-like manner. Identifying them is straightforward as they, like all mycelia, are composed of units called hyphae. The rhizomorphs form a network of grouped hyphae. Rhizomorphic mycelia initially spread out, then send back chemical signals to the colony indicating that the area ahead is suitable for nutrient provision. The rest of the mycelia then follow. The hyphae at the tip of the rhizomorphic mycelia secrete peroxidase, a substance that breaks down the material in front of it for nourishment. The hyphae then span over the material, distributing the nutrients throughout the colony. This type of mycelia is preferred by many cultivators due to its increased potential for mushroom production as the Rhizomorphic mycelia sprout from the substrate.
  2. Tomentose or “Fluffy” mycelia have more in common with Rhizomorphic mycelia than not. However, the arrangement of the strands of fluffy mycelia is distinctive. Even though the strands may not be easily observable, they exist. Their cotton-ball-like appearance signifies that the strands are clustered together. The type of mycelia that develops, whether tomentose or rhizomorphic, largely depends on the growth environment. Cultivators often debate if the mycelia type impacts the growth rate or the yield.
  3. Aerial mycelia appear when the growing conditions are less than ideal. In such circumstances, the mycelia tend to grow outward instead of spreading across the medium or forming a ball. Often mistaken for bacterial contamination, this type of mycelia can impede your mushroom cultivation, resulting in weaker, smaller mushrooms. Insufficient fresh air exchange and excessive humidity typically cause the occurrence of aerial mycelia.

Mycelium or Mould?

It’s critical to distinguish between mould and mycelium. If you notice green, blue, grey, or black patches in or on your fruiting box, it’s likely contaminated. Discoloration is the main tell-tale sign. However, the appearance of blue spots could merely indicate bruising.

Cobweb moulds are usually quite visible. Instead of the bright The white part of Mycelium usually presents a greyish shade and features a stringy and fluffy texture. Even though cobweb and green moulds pose no danger to human health, they could be detrimental to the wellness of your mushrooms.


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