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🍄 Grower guidesMushroom growing guides
Clear, practical writeups for people who sell what they grow — the numbers and decisions that actually move yield, cost, and reliability on a small gourmet mushroom farm. No fluff, no sign-up.
Biological efficiency, explained
The single most useful number on a mushroom farm — what BE means, how to calculate it, target ranges by species, and seven ways to push it higher.
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Spawn ratio, explained
How much grain spawn to mix into your substrate — 10% vs 20% vs 30%+, the trade-offs for speed, contamination, and yield, with a worked example.
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How much water to add (field capacity)
What field capacity means, the squeeze test, how much water per substrate type, and how to rescue a batch that's too wet or too dry — the moisture level that decides yield and rot.
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Contamination: identify & prevent
Recognize green mold, cobweb, black mold, and bacterial blotch at a glance, understand what each is telling you, and the prevention checklist that stops the biggest drain on a small farm.
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Run the whole farm on more than a notebook
Mycro turns these ideas into a working system: log every batch from spawn to flush and get your real BE, yield, and cost per pound — per strain and substrate.
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