Frequently Asked Questions

  • Mycology is the branch of biology concerned with the study of fungi.
  • Mycologists are people who study or work with fungi.
  • Mushrooms are the fruiting body of a fungus.
  • Fungi are not actually plants. They don’t photosynthesize, they don’t process carbon dioxide. Fungi breathe air and let off carbon dioxide – just like people!
  • Mycelium is the vegetative part of a fungus. It’s basically like the “root system” before a mushroom grows. When growing mushrooms, you want a nice strong spread of mycelium first. Mushrooms grow when the mycelium has colonized (spread) around a substrate, digested nutrients, and starts to move into a reproductive stage. 
  • A spore is a single-celled reproductive unit of a mushroom. These are kind of like seeds. Mushrooms generally drop spores once they’re fully mature, and those spores germinate together and under the right conditions will grow mycelium and more mushrooms.
  • Liquid culture is basically a clone of a mushroom – it’s early stage mycelium, ready to inject into a grow medium and immediately start spreading. Liquid culture is usually made from the best performing mushrooms, to continue their genetic spread. 
  • Fruiting or fruits in the context of mushroom growing is referring to the actual mushroom bodies, rather than the mycelium.
  • Substrate is a combination of grain and soil which provide nutrients to help mycelium grow.
  • A varietal is what specific variation of mushroom you’re growing – think of it like “strains” in cannabis. Different varietals could be Penis Envy, Albino Burma, or Steel Magnolia, for example.

Liquid culture can survive outside of refrigeration for a few months, but refrigeration is ideal to keep it healthy and lasting (culture can last a year in the fridge). If you get liquid culture and you aren’t using it right away, do stick it in the fridge. During warm weather months we generally ship liquid culture with cold packs to keep the temperature reasonable.

DO NOT FREEZE liquid culture.

If your liquid culture gets excessively warm, it can also cause issues (don’t leave it in a hot car for several hours). Reach out if you think there’s a problem with your liquid culture:

Liquid culture should be a liquid that is not quite clear – it should have a mild “honey tone” to it. Suspended in that liquid should be a slightly different light-color-toned substance of “clouds” of mycelium. Over time, clouds can congregate to one area of the syringe. You can swirl and shake the syringe, even vigorously, to separate the clouds to get a better look at them.

If there’s an obvious green or pink color that is mold. Contact us at for replacement.

If the clouds look particularly “stringy” and dark, the mycelium may be degrading. If there aren’t any distinguishable clouds and it just looks “foggy”, the mycelium may not be viable. Contact us for replacement.

If you see a piece of solid white – that’s actually very active mycelium that got a little bit of air exposure (this often happens over time if there’s an air bubble in the syringe) and started to grow in the culture! There’s nothing actually wrong here, except that it can get stuck in the needle.

If a spot of mycelium is in the syringe and starts to get stuck when you’re inoculating, gently alternate pushing out and pulling back the syringe plunger to dislodge the stuck piece and allow the rest of the culture to enter the bag. The harder you push the more likely the piece will get more stuck or you’ll break the syringe or needle. Be gentle.

We recommend not trying to remove the piece by hand unless you are able to do so in a sterile way. Contact us at if anything gets stuck.

If you’re unsure about your syringe, please contact us at – including batch number and photos can assist us in tracking issues.

Contact us at so we can figure out how best to help you out! We do have wholesale pricing!

We ship to all 50 states!

No, at the moment we don’t do international shipping.