Have you ever thought about becoming a budding mushroom cultivator? You’ll need to know the differences between liquid culture and spore syringes if you’ve ever nurtured this idea. In this article, we’ll take you through everything you should know about the two mushroom cultivation tools and also clear the misinformation about these tools so you can decide the best for your growing project.

The mycology world is a vast one, and for a novice, some of the terminology used can be confusing and intimidating. However, we at Microdose Bros remain committed to setting things straight for everyone. Continue reading to learn more.

The Basics of Liquid Culture and Spore Syringe

The two tools are widely known for their ability to grow mushrooms. However, they differ in their applications and contents. In the next few sections of this article, we will explore the key things you should know about liquid culture syringes and spore syringes to make it easier for you to decide which is best for you.

What Is A Spore Syringe?

A spore syringe is simply a syringe that contains the reproductive material of a mushroom, which is the spores. This is usually suspended in sterilized water. A key thing to understand is that spores are comparable to seeds because they must germinate for the mushrooms to grow. To grow mushrooms with the spore syringes, you only need to inject the solution into a substrate that is viable. With that, the growth of the mycelium will start, and it will eventually colonize the substrate.

A key thing to understand is that this process usually takes between weeks to months. Also, the spores within the syringe usually have a great degree of genetic variability, implying the possibility of numerous outcomes after inoculation.

Here are some key takeaways to note:

  • Easy to access.
  • High degree of genetic variability
  • Long shelf-life
  • Spore syringes display low contamination rates.
  • Colonization takes between weeks to months.
  • Must be added to the substrate in order to create and germinate mycelium.
  • Contains mushroom spores in sterilized water.

What Is A Liquid Culture

While the syringe contains spore solution, living mycelium in honey/sugar solution is filled in the liquid culture. The key thing to understand is that the next step beyond the spore syringes is the liquid culture, and this is because their isolation and germination process is already complete. Therefore, when the liquid culture is added to the substrate, they begin colonization almost immediately, which makes the entire cultivation process a lot faster.

Another interesting thing about liquid culture is that it also displaces a low contamination rate. However, its shelf-life is shorter, and most liquid culture syringes are monoculture, implying that you get just one genetic lineage from the culture.

Here are some key takeaways to note:

  • Low contamination rates
  • Allows for fast colonization.
  • May be difficult to access depending on jurisdiction.
  • Contains mycelium in substrate.
  • Generally contains only one mushroom variety.
  • Relatively short shelf-life.

What Are the Differences Between Liquid Culture Syringes and Spore Syringes?

Although you might have already gotten an idea about the differences between liquid culture syringes and spore syringes, here’s a quick rundown of their main differences:


The first thing to note is that the spores in the syringe need to germinate to create a network of mycelia before the substrate can be colonized. Usually, this process takes up to a month, and not many cultivators will have the patience to wait. On the other hand, the liquid culture has live mycelium, and colonization takes place almost immediately after it is administered to the substrate.


If an agar culture was used in creating the liquid culture, it would have pure genetics represented by one mushroom variety. With that, it will be easier for a specific variety to be selected for key traits like yield, size, and more. This is a reason why it is important for growers to know what the flushes will look like when fully grown. On the other hand, spore syringes have multiple varieties, which facilitates competition between subspecies. It also facilitates greater variability.

Contamination Sensitivity

As mentioned earlier, both liquid culture and spore syringes have low rates of contamination. However, this is only if they are correctly prepared. In general, spores solution should not be contaminated, but it’s advisable to germinate them first in agar to be sure what you are working with, after which you can colonize a substrate. On the other hand, liquid cultures are mostly free of contamination, but there’s the need for maintaining sterile conditions.


Differentiating between the legality of spore syringes and liquid culture yields some disparity. Spore syringes, not yet having developed into mycelium, are generally regarded as legal in most jurisdictions. Conversely, the legality of liquid culture containing Psilocybe mycelium is more uncertain and subject to variation depending on location. It is advisable to thoroughly research the regulations applicable to your area prior to purchasing live Psilocybe mycelium. However, if your intention is to procure liquid culture specifically for culinary mushrooms such as oysters or shiitake, there should be no legal concerns whatsoever.


Spore syringes generally have a longer shelf life compared to liquid culture and can even be stored outside the refrigerator in an airtight container for approximately 6 months. However, it is still recommended to store spore syringes in the fridge for optimal conditions. On the other hand, liquid culture must be refrigerated and can spoil quickly if not stored properly. When stored correctly, liquid culture should maintain its viability for approximately 2 months after receiving the product.

Note: It is important not to confuse spore syringes with spore prints, as the latter lasts much longer due to not being hydrated.

Can You Make Liquid Culture with a Spore Syringe?

Certainly, it is possible to introduce spores into the sugar/honey solution for making a liquid culture. However, isolating a specific mushroom variety may not be attainable using this method. Additionally, there is a potential risk of contamination, making it advisable to first germinate the spores on agar before proceeding with the liquid culture.

By following this approach, the chances of contamination can be reduced. Also, you may have the opportunity to choose and cultivate a particular type of mushroom variety.

Which Is Better for Mushroom Cultivation: Spore Syringes or Liquid Culture?

When it comes to choosing between a spore syringe or liquid culture for growing fungi, it is important to understand that neither option is superior to the other. However, liquid culture is favored by many experienced mushroom cultivators due to its faster colonization. It also has a lower contamination risk and low genetic variability.

On the other hand, spore syringes gain more preference from hobby cultivators and growers alike. This is because they have a longer shelf-life, and are more readily available. They can also be transformed into liquid culture effectively.