"Tahi" wrote in message
o.uk...


No - wood ash is valuable as fertiliser provided that you were not
burning CCA preservative treated timber.

But don't use coal ash on the garden - too much heavy metals and there
can be enough boron to be toxic to plants.

Regards,
Martin Brown

Suggestions for what to do with coal ash would be appreciated.

wood ash and coal ash dusted over moss in lawns & lightly watered in. works
for me.