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Depends. If you leave it out in a dry environment it can take several weeks because it is difficult for spores to germinate in that condition. If placed in a place like in a sealed plastic bag, the moisture will gather up in there and the mould spores will germinate fast, in 1 maybe 2 days.

If you want to do this experiment, look up the question "How do you mold fruit?" and I have answered that there.

Hope this answers your question!

Dimitri. I

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14y ago

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