I am trying to grow oyster mushrooms. They had a very strong smell which dissipated slowly over the week now ( I actually asked another question here Question ) I am not sure of how the process is going as I don't know anything about oyster mushrooms in particular and it is my first time. So can you confirm that my spawn is growing healthy with the provided picture(s)?

What I did:

I used a 3-4 gallon transparent bucket which I drilled holes into.

I used woodchips and oat bran as substrate.

I added the spawn I bought online in layers.

Stored them in a dark place

Here are the photo of spawn after 8-9ish days




I can provide any information that you request.

2 Answers 2


Looks normal, the only thing to watch for is the horrible green mould contamination (that's why I stopped growing). Later there may be drops appearing looking like honey - not a problem.

  • Thank you for the advice. No visible mold for now. When will I start spraying water? Is it after the mycelium completely wraps the bucket or should I start now?
    – user27663
    Commented Dec 30, 2019 at 11:35
  • Later? I dont know for sure, but feel that while there is still condensation inside the mycelium isnt drying out. Unlike with plants, the water isnt transpired. The instructions I read also said to keep in the dark until time to start fruiting. Commented Dec 30, 2019 at 12:12

In my experience you don't need to spray to encourage fruiting. Most of the time I don't spray unless the room is very dry even after they start fruiting. But once the entire container is colonized, you might find you need to drop the temperature by 10-15 deg. F to trigger fruiting. But most oysters are such aggressive growers/fruiters you don't even need to do that.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.