But don't forget… before you use these tips, make sure that you are actually dealing with mold. Often, due to ignorance, flower growers mistake mineral salt deposits on the top layer of soil in a pot for mold. Unlike mold, they do not harm the plant, but they indicate that you are watering the plants with hard, untreated water, using poor-quality soil, or overusing mineral fertilizers.
Added 7 minutes later
And here's something else:
Salt and mold.
A small amount of salt placed in an airtight breadbox will protect the bread from mold.
Leftover tomato paste in a jar can be protected from mold by sprinkling it with fine salt and pouring vegetable oil over it.
Added 2 minutes later
In general, judging by the search results on Yandex for the query "salt mold," it is clear that salt and mold are definitely related... Hmm...
Elizer Yudkovsky, "HP and the Methods of Rationality".
Мой ник транслитерируется по-разному, но я предпочитаю варианты Оот и Ооот.