Observed arrival · 2026-11-06
CVGcalc: From Spawn Weight to Substrate Batch
A mushroom-growing calculator turns spawn, species, and container details into a CVG substrate recipe and preparation steps.
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- For
- Edible mushroom growers planning substrate batches
- Worth noticing
- Species notes flag temperature needs, casing requirements, long cycles, and hard-to-find spawn.
Field notes
The worked setup separates spawn from wet substrate and estimates the dry rye needed to produce the chosen spawn quantity. It also reserves a portion of the CVG mix as a top layer before combining the rest with spawn. For the displayed batch, the page gives vermiculite as about 1.74 L and notes that the volume depends on grade.
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Editorial observations of this landing page, not a rating.
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