No Kingsford!! Processed charcoal is plant poison!! But wood ash in small amounts is great in the "garden"!!! I am not sure what too much is though so........
Farmers have been burning off fields for as long as they have farmed. It is the fastest way to reintroduce carbon to the ground. All the ashes from my brush pile burns in the spring always get broadcast about the place.
Just look how green the fields and forests are after a fire roars thru. Ugly at first but boy do they green up fast.
I'm in New England now but as a kid down south a way pretty much every homeowner burned off their lawn in late winter. Got rid of the thatch and some kinds of critters but it greened them up pretty darn quick.
As much as you need NPK, in the old NPK equation roots are as important as leaves. I have some NON-Weed cuttings going and nitrogen is secondary. I could work with a 3-5-5 blend just fine.
Blah Blah Blah Blah...Ash is free, Use it. Blah blah blah