Ashes from household fires have little or no manurial value but if fairly coarse can be used to lighten very heavy or clay soils. They should not be applied to land intended for potatoes andvegetables generally. Ashes are also employed to protect delphiniums, lupins, phlox, pyreth-rums, etc., from slugs. They are only partially successful and a met-aldehyde preparation is far more effective.
Wood ashes or ashes from burnt vegetable matter contain limited amounts of potash, provided they have not been exposed to heavy rains. It is always best to store bonfire ashes in a dry place immediately they are cool. They can be applied to most crops.