Hello,
Two or three times a year I have a bonfire to dispose of the woody garden rubbish that cannot go on to the compost heap. A couple of days after the bonfire, I routinely spread the ashes around the base of fruit bushes in the garden; blackcurrants, redcurrants, jostaberries, gooseberries and raspberries.
This practise has become habit, the fruit bushes always produce a good crop and maintain good health. However, does anyone know any facts about the nutritional value of bonfire ashes? It would be good to find out about the science behind it.