Hello
I seem to remember my father saying a long time ago that weathered soot was mixed into a paste with water and then Brassica roots were dipped into the mix before planting to help prevent cabbage root fly, has anybody got any more info as to how and if it works.
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I heard that soot was used on roses to protect them and that using charcoal mixed with the soil can help make pumpkins bigger.
Makes you wonder if charcoal powder might be better as coal soot can have mercury in it I believe?