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The field guide

Every article here answers one question well, rather than trying to cover everything at once. Browse by what's happening in your grow right now.

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Why are my mushrooms growing long, pale stems instead of broad caps?

Fresh Air and Mushroom Shape

Why oyster mushrooms in particular grow long and pale without enough fresh air, and how much airflow is actually enough.

How much humidity does my mushroom actually need, and how do I maintain it?

Understanding Humidity

Why humidity matters more than almost anything else in a mushroom grow, and how to keep it steady without guesswork.

Solve

Is the white fuzz on my grow kit mycelium or mould?

Reading White Fuzz

Almost every new grower asks the same question in the first week: is this white fuzz the mushroom, or a mould? Usually, it's mycelium — here's how to tell.

Continue

How do I get a second flush from my grow kit after the first harvest?

Getting a Second Flush

Your first harvest doesn't have to be your last. Here's how to give your block the best chance of a second, smaller flush.