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Decoding Mycelium

Mycelium, the root-like structure of fungi, essentially acts as the digestive system for mushrooms. It is responsible for seeking out nutrients, converting them into a form the fungus can utilize, thereby nourishing the fungus. This nutrient-processing activity enriches the soil around, providing vital nutrients for other plants and creating a nutrient-rich biomass that is ideal for gardening mulch.

Beyond their role in mushroom growth, mycelial networks are crucial for the health and growth of many land-based plants, including trees. For example, tree roots and fungi engage in a mutual exchange: the tree offers sugars (carbon) to the fungus, and in return, the fungus provides the tree with essential minerals like nitrogen and phosphorus. You can learn more about this symbiotic relationship here.

Fascinatingly, mycelium networks function as an underground communication system among plants, mirroring neural networks in our brains. Recent scientific studies suggest that plants and trees may have primitive nervous systems that fungi might be able to influence, impacting processes like communication, memory, and learning. Mycelium also promotes soil health by decomposing organic matter and neutralizing any pollutants.

For those fascinated by the idea of cultivating magic mushrooms, comprehending the growth of mycelium is vital. Though the cultivation process might seem daunting for newbies, understanding mycelium is a crucial first move. While purchasing mushrooms from Shroom Dudes Canada online is always a viable option, learning about mycelium can enrich your cultivation journey.

Mycelium’s Growth Process


Upon encountering a growth-friendly environment, fungal spores kickstart the formation of two distinct types of mycelium. The first, known as primary or monokaryotic mycelium, is marked by the presence of a single nucleus in each cell and is generally not visible to the naked eye. The second, referred to as secondary or dikaryotic mycelium, is visible and houses two nuclei per cell.


Upon sprouting, fungal spores give rise to what is called the primary or monokaryotic mycelium. When this mycelium encounters another of its kind, they can amalgamate to form the secondary stage, known as the dikaryotic mycelium. This dikaryotic mycelium bears the potential to produce either mushrooms or sclerotia.

Mycelium Categories

Mycelia are classified into three types, of which two are indicative of successful cultivation.

  1. Rhizomorphic mycelia are string-like in their spread. They are easily recognizable and are made up of units known as hyphae, which group together to form a network called rhizomorphs. Rhizomorphic mycelia explore first, then send back chemical alerts to the colony signaling that the forthcoming area is nutrient-rich. The rest of the mycelia then follow suit. The tip of the rhizomorphic mycelia releases a substance named peroxidase that breaks down the material ahead for nourishment. These nutrient-rich hyphae then stretch over the material, spreading the nutrients to the entire colony. Owing to the higher chances of mushroom production, many cultivators favor this type of mycelia as it sprouts from the substrate.
  2. Tomentose or “Fluffy” mycelia, bear a lot of resemblances to Rhizomorphic mycelia. However, the clustering of the fluffy mycelia strands is distinct. While the strands might not be immediately observable, they are certainly there. Their cotton-ball-like appearance denotes that the strands are clumped together. The type of mycelia development, either tomentose or rhizomorphic, largely hinges on the growing environment. There is an ongoing debate among cultivators regarding the effect of mycelia type on the growth rate or harvest yield.
  3. Aerial mycelia surface when the growing conditions are less than ideal. In such situations, the mycelia tend to grow upwards rather than spreading across the medium or balling up. Often misconstrued for bacterial infection, this type of mycelia may hamper your mushroom cultivation, resulting in weaker, smaller mushrooms. Aerial mycelia are typically a result of inadequate fresh air exchange and excessive humidity.

Mould or Mycelium?

It’s vital to differentiate between mould and mycelium. If you notice patches of green, blue, grey, or black on or inside your fruiting box, it’s likely your culture is contaminated. Discoloration is the main hint. However, be aware that blue spots could just be bruises.

Cobweb moulds are typically quite conspicuous. Instead of the bright The typically greyish-white appearance of Mycelium is accompanied by a stringy and puffy texture. Although cobweb and green moulds do not pose a risk to human health, they can detrimentally impact the wellbeing of your mushrooms.


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