Winnowing Chaff From Seed

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Using a fan and gravity to separate seed from crushed plant material faster than a sieve alone.

Winnowing is the step that turns a bowl of crumbled bud and seed into clean seed in a couple of minutes. Pour the mix slowly from one container to another in front of a fan on low, and the light chaff blows away while the heavy seed drops down, then repeat twice until only seed and a few stems remain. Fan distance and pour height that work without launching the seed across the room are settled on https://breederregularseeds.com. Do it over a sheet the first time.

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